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Vulnerability details: VCID-npc6-7kwh-8ud9
Vulnerability ID VCID-npc6-7kwh-8ud9
Aliases CVE-2018-1000077
GHSA-gv86-43rv-79m2
Summary RubyGems version Ruby 2.2 series: 2.2.9 and earlier, Ruby 2.3 series: 2.3.6 and earlier, Ruby 2.4 series: 2.4.3 and earlier, Ruby 2.5 series: 2.5.0 and earlier, prior to trunk revision 62422 contains a Improper Input Validation vulnerability in ruby gems specification homepage attribute that can result in a malicious gem could set an invalid homepage URL. This vulnerability appears to have been fixed in 2.7.6.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-20 Improper Input Validation
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv3.1 5.3 http://blog.rubygems.org/2018/02/15/2.7.6-released.html
generic_textual MODERATE http://blog.rubygems.org/2018/02/15/2.7.6-released.html
cvssv3.1 5.3 http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
generic_textual MODERATE http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
cvssv3.1 5.3 https://access.redhat.com/errata/RHSA-2018:3729
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2018:3729
cvssv3.1 5.3 https://access.redhat.com/errata/RHSA-2018:3730
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2018:3730
cvssv3.1 5.3 https://access.redhat.com/errata/RHSA-2018:3731
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2018:3731
cvssv3.1 5.3 https://access.redhat.com/errata/RHSA-2019:2028
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2019:2028
cvssv3.1 5.3 https://access.redhat.com/errata/RHSA-2020:0542
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2020:0542
cvssv3.1 5.3 https://access.redhat.com/errata/RHSA-2020:0591
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2020:0591
cvssv3.1 5.3 https://access.redhat.com/errata/RHSA-2020:0663
generic_textual MODERATE https://access.redhat.com/errata/RHSA-2020:0663
cvssv3 5.5 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-1000077.json
epss 0.00757 https://api.first.org/data/v1/epss?cve=CVE-2018-1000077
epss 0.00757 https://api.first.org/data/v1/epss?cve=CVE-2018-1000077
epss 0.00757 https://api.first.org/data/v1/epss?cve=CVE-2018-1000077
epss 0.00757 https://api.first.org/data/v1/epss?cve=CVE-2018-1000077
epss 0.00757 https://api.first.org/data/v1/epss?cve=CVE-2018-1000077
epss 0.00757 https://api.first.org/data/v1/epss?cve=CVE-2018-1000077
epss 0.00757 https://api.first.org/data/v1/epss?cve=CVE-2018-1000077
epss 0.00757 https://api.first.org/data/v1/epss?cve=CVE-2018-1000077
epss 0.00757 https://api.first.org/data/v1/epss?cve=CVE-2018-1000077
cvssv3 5.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-gv86-43rv-79m2
cvssv3.1 5.3 https://github.com/jruby/jruby/commit/0b06b48ab4432237ce5fc1bef47f2c6bcf7843f7
generic_textual MODERATE https://github.com/jruby/jruby/commit/0b06b48ab4432237ce5fc1bef47f2c6bcf7843f7
cvssv3.1 5.3 https://github.com/rubygems/rubygems/commit/5971b486d4dbb2bad5d3445b3801c456eb0ce183
generic_textual MODERATE https://github.com/rubygems/rubygems/commit/5971b486d4dbb2bad5d3445b3801c456eb0ce183
cvssv3 5.3 https://github.com/rubygems/rubygems/commit/feadefc2d351dcb95d6492f5ad17ebca546eb964
cvssv3.1 5.3 https://github.com/rubygems/rubygems/commit/feadefc2d351dcb95d6492f5ad17ebca546eb964
generic_textual MODERATE https://github.com/rubygems/rubygems/commit/feadefc2d351dcb95d6492f5ad17ebca546eb964
cvssv3.1 5.3 https://lists.debian.org/debian-lts-announce/2018/04/msg00000.html
generic_textual MODERATE https://lists.debian.org/debian-lts-announce/2018/04/msg00000.html
cvssv3.1 5.3 https://lists.debian.org/debian-lts-announce/2018/04/msg00001.html
generic_textual MODERATE https://lists.debian.org/debian-lts-announce/2018/04/msg00001.html
cvssv3.1 5.3 https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html
generic_textual MODERATE https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html
cvssv3.1 5.3 https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
generic_textual MODERATE https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
cvssv3.1 5.3 https://lists.debian.org/debian-lts-announce/2019/05/msg00028.html
generic_textual MODERATE https://lists.debian.org/debian-lts-announce/2019/05/msg00028.html
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2018-1000077
cvssv3 5.3 https://nvd.nist.gov/vuln/detail/CVE-2018-1000077
cvssv3.1 5.3 https://nvd.nist.gov/vuln/detail/CVE-2018-1000077
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2018-1000077
cvssv3.1 5.3 https://usn.ubuntu.com/3621-1
generic_textual MODERATE https://usn.ubuntu.com/3621-1
cvssv3.1 5.3 https://www.debian.org/security/2018/dsa-4219
generic_textual MODERATE https://www.debian.org/security/2018/dsa-4219
cvssv3.1 5.3 https://www.debian.org/security/2018/dsa-4259
generic_textual MODERATE https://www.debian.org/security/2018/dsa-4259
Reference id Reference type URL
http://blog.rubygems.org/2018/02/15/2.7.6-released.html
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
https://access.redhat.com/errata/RHSA-2018:3729
https://access.redhat.com/errata/RHSA-2018:3730
https://access.redhat.com/errata/RHSA-2018:3731
https://access.redhat.com/errata/RHSA-2019:2028
https://access.redhat.com/errata/RHSA-2020:0542
https://access.redhat.com/errata/RHSA-2020:0591
https://access.redhat.com/errata/RHSA-2020:0663
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-1000077.json
https://api.first.org/data/v1/epss?cve=CVE-2018-1000077
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17405
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17742
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17790
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000073
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000074
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000075
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000076
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000077
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000078
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1000079
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-6914
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8777
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8778
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8779
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8780
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/jruby/jruby/commit/0b06b48ab4432237ce5fc1bef47f2c6bcf7843f7
https://github.com/rubygems/rubygems/commit/5971b486d4dbb2bad5d3445b3801c456eb0ce183
https://github.com/rubygems/rubygems/commit/feadefc2d351dcb95d6492f5ad17ebca546eb964
https://lists.debian.org/debian-lts-announce/2018/04/msg00000.html
https://lists.debian.org/debian-lts-announce/2018/04/msg00001.html
https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html
https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
https://lists.debian.org/debian-lts-announce/2019/05/msg00028.html
https://nvd.nist.gov/vuln/detail/CVE-2018-1000077
https://usn.ubuntu.com/3621-1
https://www.debian.org/security/2018/dsa-4219
https://www.debian.org/security/2018/dsa-4259
1547422 https://bugzilla.redhat.com/show_bug.cgi?id=1547422
cpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:rubygems:rubygems:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
GHSA-gv86-43rv-79m2 https://github.com/advisories/GHSA-gv86-43rv-79m2
USN-3621-1 https://usn.ubuntu.com/3621-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at http://blog.rubygems.org/2018/02/15/2.7.6-released.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

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unchanged

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://access.redhat.com/errata/RHSA-2018:3729
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

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unchanged

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://access.redhat.com/errata/RHSA-2018:3730
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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unchanged

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://access.redhat.com/errata/RHSA-2018:3731
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

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required

unchanged

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://access.redhat.com/errata/RHSA-2019:2028
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://access.redhat.com/errata/RHSA-2020:0542
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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unchanged

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://access.redhat.com/errata/RHSA-2020:0591
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

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unchanged

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://access.redhat.com/errata/RHSA-2020:0663
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

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required

unchanged

changed

high

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Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-1000077.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

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unchanged

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Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://github.com/jruby/jruby/commit/0b06b48ab4432237ce5fc1bef47f2c6bcf7843f7
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

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low

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://github.com/rubygems/rubygems/commit/5971b486d4dbb2bad5d3445b3801c456eb0ce183
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

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physical

low

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Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://github.com/rubygems/rubygems/commit/feadefc2d351dcb95d6492f5ad17ebca546eb964
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

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none

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required

unchanged

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none

high

low

none

high

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none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://lists.debian.org/debian-lts-announce/2018/04/msg00000.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://lists.debian.org/debian-lts-announce/2018/04/msg00001.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

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low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://lists.debian.org/debian-lts-announce/2018/04/msg00023.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

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required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

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required

unchanged

changed

high

low

none

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low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://lists.debian.org/debian-lts-announce/2019/05/msg00028.html
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-1000077
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-1000077
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-1000077
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://usn.ubuntu.com/3621-1
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://www.debian.org/security/2018/dsa-4219
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Found at https://www.debian.org/security/2018/dsa-4259
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.7225
EPSS Score 0.00757
Published At June 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-01T12:16:42.707113+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/3621-1/ 36.1.3