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Vulnerability details: VCID-4z5m-pfsj-6qdt
Vulnerability ID VCID-4z5m-pfsj-6qdt
Aliases CVE-2019-8321
GHSA-fr32-gr5c-xq5c
Summary An issue was discovered in RubyGems 2.6 and later through 3.0.2. Since Gem::UserInteraction#verbose calls say without escaping, escape sequence injection is possible.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-88 Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
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 7.5 http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
generic_textual HIGH http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
cvssv3 5.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-8321.json
epss 0.00135 https://api.first.org/data/v1/epss?cve=CVE-2019-8321
epss 0.00254 https://api.first.org/data/v1/epss?cve=CVE-2019-8321
epss 0.00254 https://api.first.org/data/v1/epss?cve=CVE-2019-8321
epss 0.00254 https://api.first.org/data/v1/epss?cve=CVE-2019-8321
epss 0.00254 https://api.first.org/data/v1/epss?cve=CVE-2019-8321
epss 0.00254 https://api.first.org/data/v1/epss?cve=CVE-2019-8321
epss 0.00254 https://api.first.org/data/v1/epss?cve=CVE-2019-8321
epss 0.00254 https://api.first.org/data/v1/epss?cve=CVE-2019-8321
cvssv3 7.5 https://blog.rubygems.org/2019/03/05/security-advisories-2019-03.html
cvssv3.1 7.5 https://blog.rubygems.org/2019/03/05/security-advisories-2019-03.html
generic_textual HIGH https://blog.rubygems.org/2019/03/05/security-advisories-2019-03.html
cvssv3 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-fr32-gr5c-xq5c
cvssv3.1 7.5 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2019-8321.yml
generic_textual HIGH https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2019-8321.yml
cvssv3.1 7.5 https://lists.debian.org/debian-lts-announce/2020/08/msg00027.html
generic_textual HIGH https://lists.debian.org/debian-lts-announce/2020/08/msg00027.html
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2019-8321
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2019-8321
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2019-8321
Reference id Reference type URL
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-8321.json
https://api.first.org/data/v1/epss?cve=CVE-2019-8321
https://blog.rubygems.org/2019/03/05/security-advisories-2019-03.html
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-8320
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-8321
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-8322
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-8323
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-8324
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-8325
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2019-8321.yml
https://hackerone.com/reports/317330
https://lists.debian.org/debian-lts-announce/2020/08/msg00027.html
https://nvd.nist.gov/vuln/detail/CVE-2019-8321
1692514 https://bugzilla.redhat.com/show_bug.cgi?id=1692514
925987 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=925987
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:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
GHSA-fr32-gr5c-xq5c https://github.com/advisories/GHSA-fr32-gr5c-xq5c
RHSA-2019:1148 https://access.redhat.com/errata/RHSA-2019:1148
RHSA-2019:1150 https://access.redhat.com/errata/RHSA-2019:1150
RHSA-2019:1235 https://access.redhat.com/errata/RHSA-2019:1235
RHSA-2020:2769 https://access.redhat.com/errata/RHSA-2020:2769
USN-3945-1 https://usn.ubuntu.com/3945-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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

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://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-8321.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

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://blog.rubygems.org/2019/03/05/security-advisories-2019-03.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: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

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rubygems-update/CVE-2019-8321.yml
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://lists.debian.org/debian-lts-announce/2020/08/msg00027.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-2019-8321
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-8321
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 0.34322
EPSS Score 0.00135
Published At July 4, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-01T12:16:33.277559+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/3945-1/ 36.1.3