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:"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubygems/rubygems/commit/8d91516fb7037ecfb27622f605dc40245e0f8d32"},{"reference_url":"https://hackerone.com/reports/218088","reference_id":"","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://hackerone.com/reports/218088"},{"reference_url":"https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html","reference_id":"","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html"},{"reference_url":"https://security.gentoo.org/glsa/201710-01","reference_id":"","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://security.gentoo.org/glsa/201710-01"},{"reference_url":"https://usn.ubuntu.com/3553-1","reference_id":"","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://usn.ubuntu.com/3553-1"},{"reference_url":"https://usn.ubuntu.com/3685-1","reference_id":"","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://usn.ubuntu.com/3685-1"},{"reference_url":"https://web.archive.org/web/20170907040741/http://www.securityfocus.com/bid/100586","reference_id":"","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://web.archive.org/web/20170907040741/http://www.securityfocus.com/bid/100586"},{"reference_url":"https://web.archive.org/web/20170907215801/http://www.securitytracker.com/id/1039249","reference_id":"","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://web.archive.org/web/20170907215801/http://www.securitytracker.com/id/1039249"},{"reference_url":"https://www.debian.org/security/2017/dsa-3966","reference_id":"","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.debian.org/security/2017/dsa-3966"},{"reference_url":"http://www.securityfocus.com/bid/100586","reference_id":"","reference_type":"","scores":[],"url":"http://www.securityfocus.com/bid/100586"},{"reference_url":"http://www.securitytracker.com/id/1039249","reference_id":"","reference_type":"","scores":[],"url":"http://www.securitytracker.com/id/1039249"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1487589","reference_id":"1487589","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1487589"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2017-0902","reference_id":"CVE-2017-0902","reference_type":"","scores":[{"value":"8.1","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-0902"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/54036?format=json","purl":"pkg:gem/rubygems-update@2.6.13","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-1ab1-3xjd-aqbp"},{"vulnerability":"VCID-c7rs-vbjr-nyfz"},{"vulnerability":"VCID-hyvx-ab9s-uyby"},{"vulnerability":"VCID-k7u9-hhnh-m7f5"},{"vulnerability":"VCID-kxbg-rg3f-ruad"},{"vulnerability":"VCID-rpe2-d8ht-u3ht"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/rubygems-update@2.6.13"}],"aliases":["CVE-2017-0902","GHSA-73w7-6w9g-gc8w"],"risk_score":4.0,"exploitability":"0.5","weighted_severity":"8.0","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-br82-gd5d-pqew"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/39019?format=json","vulnerability_id":"VCID-c7rs-vbjr-nyfz","summary":"Deserialization 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Specially crafted serialized objects can possibly be used to escalate to remote code 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- Security Features\nRubyGems does not validate the hostname when fetching gems or making API requests, which allows remote attackers to redirect requests to arbitrary domains via a crafted DNS SRV record, aka a \"DNS hijack attack.\"","references":[{"reference_url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163502.html","reference_id":"","reference_type":"","scores":[{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163502.html"},{"reference_url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163600.html","reference_id":"","reference_type":"","scores":[{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-August/163600.html"},{"reference_url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-August/164236.html","reference_id":"","reference_type":"","scores":[{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-August/164236.html"},{"reference_url":"http://rhn.redhat.com/errata/RHSA-2015-1657.html","reference_id":"","reference_type":"","scores":[{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://rhn.redhat.com/errata/RHSA-2015-1657.html"},{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2015-3900.json","reference_id":"","reference_type":"","scores":[],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2015-3900.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2015-3900","reference_id":"","reference_type":"","scores":[{"value":"0.02401","scoring_system":"epss","scoring_elements":"0.85352","published_at":"2026-06-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2015-3900"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2015-3900.yml","reference_id":"","reference_type":"","scores":[{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2015-3900.yml"},{"reference_url":"https://web.archive.org/web/20170331091241/https://puppet.com/security/cve/CVE-2015-3900","reference_id":"","reference_type":"","scores":[{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://web.archive.org/web/20170331091241/https://puppet.com/security/cve/CVE-2015-3900"},{"reference_url":"https://web.archive.org/web/20200228055155/http://www.securityfocus.com/bid/75482","reference_id":"","reference_type":"","scores":[{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://web.archive.org/web/20200228055155/http://www.securityfocus.com/bid/75482"},{"reference_url":"https://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2015-007/?fid=6356","reference_id":"","reference_type":"","scores":[{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2015-007/?fid=6356"},{"reference_url":"https://www.trustwave.com/Resources/SpiderLabs-Blog/Attacking-Ruby-Gem-Security-with-CVE-2015-3900","reference_id":"","reference_type":"","scores":[{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.trustwave.com/Resources/SpiderLabs-Blog/Attacking-Ruby-Gem-Security-with-CVE-2015-3900"},{"reference_url":"https://www.trustwave.com/Resources/SpiderLabs-Blog/Attacking-Ruby-Gem-Security-with-CVE-2015-3900/","reference_id":"","reference_type":"","scores":[],"url":"https://www.trustwave.com/Resources/SpiderLabs-Blog/Attacking-Ruby-Gem-Security-with-CVE-2015-3900/"},{"reference_url":"http://www.openwall.com/lists/oss-security/2015/06/26/2","reference_id":"","reference_type":"","scores":[{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://www.openwall.com/lists/oss-security/2015/06/26/2"},{"reference_url":"http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html","reference_id":"","reference_type":"","scores":[{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html"},{"reference_url":"http://www.securityfocus.com/bid/75482","reference_id":"","reference_type":"","scores":[],"url":"http://www.securityfocus.com/bid/75482"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1236116","reference_id":"1236116","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1236116"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2015-3900","reference_id":"CVE-2015-3900","reference_type":"","scores":[{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-3900"},{"reference_url":"https://puppet.com/security/cve/CVE-2015-3900","reference_id":"CVE-2015-3900","reference_type":"","scores":[{"value":"HIGH","sc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Injection\nRubyGems is vulnerable to maliciously crafted gem specifications that include terminal escape characters. Printing the gem specification would execute terminal escape sequences.","references":[{"reference_url":"http://blog.rubygems.org/2017/08/27/2.6.13-released.html","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://blog.rubygems.org/2017/08/27/2.6.13-released.html"},{"reference_url":"https://access.redhat.com/errata/RHSA-2017:3485","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://access.redhat.com/errata/RHSA-2017:3485"},{"reference_url":"https://access.redhat.com/errata/RHSA-2018:0378","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://access.redhat.com/errata/RHSA-2018:0378"},{"reference_url":"https://access.redhat.com/errata/RHSA-2018:0583","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://access.redhat.com/errata/RHSA-2018:0583"},{"reference_url":"https://access.redhat.com/errata/RHSA-2018:0585","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://access.redhat.com/errata/RHSA-2018:0585"},{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-0899.json","reference_id":"","reference_type":"","scores":[{"value":"4.3","scoring_system":"cvssv3","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2017-0899.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2017-0899","reference_id":"","reference_type":"","scores":[{"value":"0.09304","scoring_system":"epss","scoring_elements":"0.92901","published_at":"2026-06-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2017-0899"},{"reference_url":"https://blog.rubygems.org/2017/08/27/2.6.13-released.html","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3","scoring_elements":""}],"url":"https://blog.rubygems.org/2017/08/27/2.6.13-released.html"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-9096","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-9096"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7798","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7798"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0899","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0899"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0900","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0900"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0901","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0901"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0902","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0902"},{"reference_url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14064","reference_id":"","reference_type":"","scores":[],"url":"https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-14064"},{"reference_url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml","reference_id":"","reference_type":"","scores":[{"value":"7.5","scoring_system":"cvssv2","scoring_elements":"AV:N/AC:L/Au:N/C:P/I:P/A:P"},{"value":"4.3","scoring_system":"cvssv3","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N"}],"url":"https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml"},{"reference_url":"https://github.com/rubygems/rubygems","reference_id":"","reference_type":"","scores":[{"value":"9.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"value":"CRITICAL","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubygems/rubygems"},{"reference_url":"https://github.com/rubygems/rubygems/commit/1bcbc7fe637b03145401ec9c094066285934a7f1","referenc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Issues\nAlgorithmic complexity vulnerability in Gem::Version::ANCHORED_VERSION_PATTERN in lib/rubygems/version.rb in RubyGems allows remote attackers to cause a denial of service (CPU consumption) via a crafted gem version that triggers a large amount of backtracking in a regular expression.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2013-4363.json","reference_id":"","reference_type":"","scores":[],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2013-4363.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2013-4363","reference_id":"","reference_type":"","scores":[{"value":"0.00588","scoring_system":"epss","scoring_elements":"0.69509","published_at":"2026-06-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2013-4363"},{"reference_url":"https://github.com/rubygems/rubygems","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubygems/rubygems"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2013-4363.yml","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2013-4363.yml"},{"reference_url":"https://web.archive.org/web/20170331150441/https://puppet.com/security/cve/cve-2013-4363","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://web.archive.org/web/20170331150441/https://puppet.com/security/cve/cve-2013-4363"},{"reference_url":"http://www.openwall.com/lists/oss-security/2013/09/14/3","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://www.openwall.com/lists/oss-security/2013/09/14/3"},{"reference_url":"http://www.openwall.com/lists/oss-security/2013/09/18/8","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://www.openwall.com/lists/oss-security/2013/09/18/8"},{"reference_url":"http://www.openwall.com/lists/oss-security/2013/09/20/1","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://www.openwall.com/lists/oss-security/2013/09/20/1"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1009720","reference_id":"1009720","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1009720"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=722361","reference_id":"722361","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=722361"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2013-4363","reference_id":"CVE-2013-4363","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-4363"},{"reference_url":"https://puppet.com/security/cve/cve-2013-4363","reference_id":"CVE-2013-4363","reference_type":"","scores":[],"url":"https://puppet.com/security/cve/cve-2013-4363"},{"reference_url":"http://blog.rubygems.org/2013/09/24/CVE-2013-4363.html","reference_id":"CVE-2013-4363.HTML","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://blog.rubygems.org/2013/09/24/CVE-2013-4363.html"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/51644?format=json","purl":"pkg:gem/rubygems-update@2.1.4","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-68hc-d8u1-yye5"},{"vulnerability":"VCID-bb6n-nq7v-8qex"},{"vulnerability":"VCID-br82-gd5d-pqew"},{"vulnerability":"VCID-c7rs-vbjr-nyfz"},{"vulnerability":"VCID-c9w3-xh7j-57bq"},{"vulnerability":"VCID-nd17-pxzx-nyba"},{"vulnerability":"VCID-t8p2-dj3e-r7gt"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/rubygems-update@2.1.4"},{"url":"http://public2.vulnerablecode.io/api/packages/155143?format=json","purl":"pkg:gem/rubygems-update@2.1.5","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-68hc-d8u1-yye5"},{"vulnerability":"VCID-bb6n-nq7v-8qex"},{"vulnerability":"VCID-br82-gd5d-pqew"},{"vulnerability":"VCID-c7rs-vbjr-nyfz"},{"vulnerability":"VCID-c9w3-xh7j-57bq"},{"vulnerability":"VCID-nd17-pxzx-nyba"},{"vulnerability":"VCID-t8p2-dj3e-r7gt"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/rubygems-update@2.1.5"}],"aliases":["CVE-2013-4363","GHSA-9qvm-2vhf-q649"],"risk_score":3.1,"exploitability":"0.5","weighted_severity":"6.2","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-ptwy-1jy5-4ugp"},{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/37905?format=json","vulnerability_id":"VCID-t8p2-dj3e-r7gt","summary":"Improper Input Validation\nRubyGems does not validate the hostname when fetching gems or making API requests, which allows remote attackers to redirect requests to arbitrary domains via a crafted DNS SRV record with a domain that is suffixed with the original domain name, aka a \"DNS hijack attack.\" NOTE: this vulnerability exists because to an incomplete fix for CVE-2015-3900.","references":[{"reference_url":"http://blog.rubygems.org/2015/06/08/2.2.5-released.html","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://blog.rubygems.org/2015/06/08/2.2.5-released.html"},{"reference_url":"http://blog.rubygems.org/2015/06/08/2.4.8-released.html","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://blog.rubygems.org/2015/06/08/2.4.8-released.html"},{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2015-4020.json","reference_id":"","reference_type":"","scores":[],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2015-4020.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2015-4020","reference_id":"","reference_type":"","scores":[{"value":"0.00524","scoring_system":"epss","scoring_elements":"0.67277","published_at":"2026-06-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2015-4020"},{"reference_url":"https://github.com/rubygems/rubygems","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubygems/rubygems"},{"reference_url":"https://github.com/rubygems/rubygems/commit/5c7bfb5","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubygems/rubygems/commit/5c7bfb5"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2015-4020.yml","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2015-4020.yml"},{"reference_url":"https://web.archive.org/web/20200228084212/http://www.securityfocus.com/bid/75431","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://web.archive.org/web/20200228084212/http://www.securityfocus.com/bid/75431"},{"reference_url":"https://web.archive.org/web/20200228085830/https://puppet.com/security/cve/CVE-2015-3900","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://web.archive.org/web/20200228085830/https://puppet.com/security/cve/CVE-2015-3900"},{"reference_url":"https://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2015-009/?fid=6478","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.trustwave.com/Resources/Security-Advisories/Advisories/TWSL2015-009/?fid=6478"},{"reference_url":"https://www.trustwave.com/Resources/SpiderLabs-Blog/Attacking-Ruby-Gem-Security-with-CVE-2015-3900","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.trustwave.com/Resources/SpiderLabs-Blog/Attacking-Ruby-Gem-Security-with-CVE-2015-3900"},{"reference_url":"https://www.trustwave.com/Resources/SpiderLabs-Blog/Attacking-Ruby-Gem-Security-with-CVE-2015-3900/","reference_id":"","reference_type":"","scores":[],"url":"https://www.trustwave.com/Resources/SpiderLabs-Blog/Attacking-Ruby-Gem-Security-with-CVE-2015-3900/"},{"reference_url":"http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html"},{"reference_url":"http://www.securityfocus.com/bid/75431","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://www.securityfocus.com/bid/75431"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1250109","reference_id":"1250109","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1250109"},{"reference_url":"https://puppet.com/security/cve/CVE-2015-3900","reference_id":"CVE-2015-3900","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://puppet.com/security/cve/CVE-2015-3900"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2015-4020","reference_id":"CVE-2015-4020","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-4020"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/151621?format=json","purl":"pkg:gem/rubygems-update@2.0.17","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-68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Issues\nAlgorithmic complexity vulnerability in Gem::Version::ANCHORED_VERSION_PATTERN in lib/rubygems/version.rb in RubyGems allows remote attackers to cause a denial of service (CPU consumption) via a crafted gem version that triggers a large amount of backtracking in a regular expression.","references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2013-4363.json","reference_id":"","reference_type":"","scores":[],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2013-4363.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2013-4363","reference_id":"","reference_type":"","scores":[{"value":"0.00588","scoring_system":"epss","scoring_elements":"0.69509","published_at":"2026-06-04T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2013-4363"},{"reference_url":"https://github.com/rubygems/rubygems","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubygems/rubygems"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2013-4363.yml","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2013-4363.yml"},{"reference_url":"https://web.archive.org/web/20170331150441/https://puppet.com/security/cve/cve-2013-4363","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://web.archive.org/web/20170331150441/https://puppet.com/security/cve/cve-2013-4363"},{"reference_url":"http://www.openwall.com/lists/oss-security/2013/09/14/3","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://www.openwall.com/lists/oss-security/2013/09/14/3"},{"reference_url":"http://www.openwall.com/lists/oss-security/2013/09/18/8","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://www.openwall.com/lists/oss-security/2013/09/18/8"},{"reference_url":"http://www.openwall.com/lists/oss-security/2013/09/20/1","reference_id":"","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://www.openwall.com/lists/oss-security/2013/09/20/1"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1009720","reference_id":"1009720","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1009720"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=722361","reference_id":"722361","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=722361"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2013-4363","reference_id":"CVE-2013-4363","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-4363"},{"reference_url":"https://puppet.com/security/cve/cve-2013-4363","reference_id":"CVE-2013-4363","reference_type":"","scores":[],"url":"https://puppet.com/security/cve/cve-2013-4363"},{"reference_url":"http://blog.rubygems.org/2013/09/24/CVE-2013-4363.html","reference_id":"CVE-2013-4363.HTML","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://blog.rubygems.org/2013/09/24/CVE-2013-4363.html"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/155140?format=json","purl":"pkg:gem/rubygems-update@1.8.23.2","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-68hc-d8u1-yye5"},{"vulnerability":"VCID-bb6n-nq7v-8qex"},{"vulnerability":"VCID-bddt-hdtz-4qhp"},{"vulnerability":"VCID-br82-gd5d-pqew"},{"vulnerability":"VCID-c9w3-xh7j-57bq"},{"vulnerability":"VCID-nd17-pxzx-nyba"},{"vulnerability":"VCID-ptwy-1jy5-4ugp"},{"vulnerability":"VCID-t8p2-dj3e-r7gt"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/rubygems-update@1.8.23.2"},{"url":"http://public2.vulnerablecode.io/api/packages/155141?format=json","purl":"pkg:gem/rubygems-update@1.8.27","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-68hc-d8u1-yye5"},{"vulnerability":"VCID-bb6n-nq7v-8qex"},{"vulnerability":"VCID-bddt-hdtz-4qhp"},{"vulnerability":"VCID-br82-gd5d-pqew"},{"vulnerability":"VCID-c9w3-xh7j-57bq"},{"vulnerability":"VCID-nd17-pxzx-nyba"},{"vulnerability":"VCID-ptwy-1jy5-4ugp"},{"vulnerability":"VCID-t8p2-dj3e-r7gt"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/rubygems-update@1.8.27"},{"url":"http://public2.vulnerablecode.io/api/packages/155142?format=json","purl":"pkg:gem/rubygems-update@2.0.10","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-68hc-d8u1-yye5"},{"vulnerability":"VCID-bb6n-nq7v-8qex"},{"vulnerability":"VCID-bddt-hdtz-4qhp"},{"vulnerability":"VCID-br82-gd5d-pqew"},{"vulnerability":"VCID-c7rs-vbjr-nyfz"},{"vulnerability":"VCID-c9w3-xh7j-57bq"},{"vulnerability":"VCID-nd17-pxzx-nyba"},{"vulne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