{"url":"http://public2.vulnerablecode.io/api/packages/130802?format=json","purl":"pkg:gem/user_agent_parser@1.0.0","type":"gem","namespace":"","name":"user_agent_parser","version":"1.0.0","qualifiers":{},"subpath":"","is_vulnerable":true,"next_non_vulnerable_version":"2.5.1","latest_non_vulnerable_version":"2.6.0","affected_by_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/13304?format=json","vulnerability_id":"VCID-5ng1-aqw3-w7cy","summary":"ReDoS\nThe programming library UA-Parser uses regular expressions to identify user agent strings. The complexity of the regular expressions is such that an attacker can craft special patterns that keep the server busy for a long time. By sending many requests in short order, an attacker can exhaust the amount of processing power available.","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2018-20164","reference_id":"","reference_type":"","scores":[{"value":"0.00967","scoring_system":"epss","scoring_elements":"0.76887","published_at":"2026-05-30T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2018-20164"},{"reference_url":"https://github.com/ua-parser/uap-core","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/ua-parser/uap-core"},{"reference_url":"https://github.com/ua-parser/uap-core/commit/010ccdc7303546cd22b9da687c29f4a996990014","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/ua-parser/uap-core/commit/010ccdc7303546cd22b9da687c29f4a996990014"},{"reference_url":"https://github.com/ua-parser/uap-core/commit/156f7e12b215bddbaf3df4514c399d683e6cdadc","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/ua-parser/uap-core/commit/156f7e12b215bddbaf3df4514c399d683e6cdadc"},{"reference_url":"https://github.com/ua-parser/uap-core/issues/332","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/ua-parser/uap-core/issues/332"},{"reference_url":"https://github.com/ua-parser/uap-core/pull/363/files","reference_id":"","reference_type":"","scores":[],"url":"https://github.com/ua-parser/uap-core/pull/363/files"},{"reference_url":"https://www.openwall.com/lists/oss-security/2019/01/10/2","reference_id":"","reference_type":"","scores":[],"url":"https://www.openwall.com/lists/oss-security/2019/01/10/2"},{"reference_url":"https://www.x41-dsec.de/lab/advisories/x41-2018-009-uaparser","reference_id":"","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://www.x41-dsec.de/lab/advisories/x41-2018-009-uaparser"},{"reference_url":"https://www.x41-dsec.de/lab/advisories/x41-2018-009-uaparser/","reference_id":"","reference_type":"","scores":[],"url":"https://www.x41-dsec.de/lab/advisories/x41-2018-009-uaparser/"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=922717","reference_id":"922717","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=922717"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2018-20164","reference_id":"CVE-2018-20164","reference_type":"","scores":[{"value":"5.3","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-20164"},{"reference_url":"https://github.com/advisories/GHSA-fx7m-j728-mjw3","reference_id":"GHSA-fx7m-j728-mjw3","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-fx7m-j728-mjw3"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/56437?format=json","purl":"pkg:gem/user_agent_parser@2.5.1","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/user_agent_parser@2.5.1"}],"aliases":["CVE-2018-20164","GHSA-fx7m-j728-mjw3"],"risk_score":3.1,"exploitability":"0.5","weighted_severity":"6.2","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-5ng1-aqw3-w7cy"}],"fixing_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/164899?format=json","vulnerability_id":"VCID-c9kw-yt2m-xyc8","summary":"","references":[{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-5243","reference_id":"","reference_type":"","scores":[{"value":"0.00805","scoring_system":"epss","scoring_elements":"0.74439","published_at":"2026-05-30T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-5243"},{"reference_url":"https://github.com/ua-parser/uap-core/commit/0afd61ed85396a3b5316f18bfd1edfaadf8e88e1","reference_id":"","reference_type":"","scores":[{"value":"5.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/ua-parser/uap-core/commit/0afd61ed85396a3b5316f18bfd1edfaadf8e88e1"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=952649","reference_id":"952649","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=952649"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5243","reference_id":"CVE-2020-5243","reference_type":"","scores":[{"value":"5.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5243"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/user_agent_parser/CVE-2020-5243.yml","reference_id":"CVE-2020-5243.YML","reference_type":"","scores":[{"value":"5.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/user_agent_parser/CVE-2020-5243.yml"},{"reference_url":"https://github.com/advisories/GHSA-cmcx-xhr8-3w9p","reference_id":"GHSA-cmcx-xhr8-3w9p","reference_type":"","scores":[{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-cmcx-xhr8-3w9p"},{"reference_url":"https://github.com/ua-parser/uap-core/security/advisories/GHSA-cmcx-xhr8-3w9p","reference_id":"GHSA-cmcx-xhr8-3w9p","reference_type":"","scores":[{"value":"5.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"cvssv3.1_qr","scoring_elements":""},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/ua-parser/uap-core/security/advisories/GHSA-cmcx-xhr8-3w9p"},{"reference_url":"https://github.com/ua-parser/uap-ruby/security/advisories/GHSA-pcqq-5962-hvcw","reference_id":"GHSA-pcqq-5962-hvcw","reference_type":"","scores":[{"value":"5.7","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H"},{"value":"MODERATE","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/ua-parser/uap-ruby/security/advisories/GHSA-pcqq-5962-hvcw"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/130802?format=json","purl":"pkg:gem/user_agent_parser@1.0.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-5ng1-aqw3-w7cy"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/user_agent_parser@1.0.0"},{"url":"http://public2.vulnerablecode.io/api/packages/74661?format=json","purl":"pkg:gem/user_agent_parser@2.6.0","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/user_agent_parser@2.6.0"}],"aliases":["CVE-2020-5243","GHSA-cmcx-xhr8-3w9p"],"risk_score":3.1,"exploitability":"0.5","weighted_severity":"6.2","resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-c9kw-yt2m-xyc8"}],"risk_score":"3.1","resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/user_agent_parser@1.0.0"}