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Vulnerability details: VCID-nq1x-s9hz-a7fb
Vulnerability ID VCID-nq1x-s9hz-a7fb
Aliases CVE-2021-21695
GHSA-cvvm-4cr9-r436
Summary Missing Authorization FilePath#listFiles lists files outside directories that agents are allowed to access when following symbolic links in Jenkins.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-59 Improper Link Resolution Before File Access ('Link Following')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-862 Missing Authorization
System Score Found at
cvssv3 9.0 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-21695.json
epss 0.00528 https://api.first.org/data/v1/epss?cve=CVE-2021-21695
epss 0.00528 https://api.first.org/data/v1/epss?cve=CVE-2021-21695
epss 0.00528 https://api.first.org/data/v1/epss?cve=CVE-2021-21695
epss 0.00528 https://api.first.org/data/v1/epss?cve=CVE-2021-21695
epss 0.00528 https://api.first.org/data/v1/epss?cve=CVE-2021-21695
epss 0.00528 https://api.first.org/data/v1/epss?cve=CVE-2021-21695
epss 0.00528 https://api.first.org/data/v1/epss?cve=CVE-2021-21695
epss 0.00528 https://api.first.org/data/v1/epss?cve=CVE-2021-21695
epss 0.00528 https://api.first.org/data/v1/epss?cve=CVE-2021-21695
epss 0.00528 https://api.first.org/data/v1/epss?cve=CVE-2021-21695
epss 0.00528 https://api.first.org/data/v1/epss?cve=CVE-2021-21695
epss 0.00528 https://api.first.org/data/v1/epss?cve=CVE-2021-21695
epss 0.00528 https://api.first.org/data/v1/epss?cve=CVE-2021-21695
epss 0.00528 https://api.first.org/data/v1/epss?cve=CVE-2021-21695
epss 0.00528 https://api.first.org/data/v1/epss?cve=CVE-2021-21695
cvssv3.1_qr CRITICAL https://github.com/advisories/GHSA-cvvm-4cr9-r436
cvssv3.1 9.0 https://github.com/jenkinsci/jenkins
generic_textual CRITICAL https://github.com/jenkinsci/jenkins
cvssv3.1 9.0 https://github.com/jenkinsci/jenkins/commit/63cde2daadc705edf086f2213b48c8c547f98358
generic_textual CRITICAL https://github.com/jenkinsci/jenkins/commit/63cde2daadc705edf086f2213b48c8c547f98358
cvssv3.1 9.0 https://nvd.nist.gov/vuln/detail/CVE-2021-21695
generic_textual CRITICAL https://nvd.nist.gov/vuln/detail/CVE-2021-21695
archlinux Critical https://security.archlinux.org/AVG-2526
cvssv3.1 9.0 https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455
generic_textual CRITICAL https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455
cvssv3.1 9.0 http://www.openwall.com/lists/oss-security/2021/11/04/3
generic_textual CRITICAL http://www.openwall.com/lists/oss-security/2021/11/04/3
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-21695.json
https://api.first.org/data/v1/epss?cve=CVE-2021-21695
https://github.com/jenkinsci/jenkins
https://github.com/jenkinsci/jenkins/commit/63cde2daadc705edf086f2213b48c8c547f98358
https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455
http://www.openwall.com/lists/oss-security/2021/11/04/3
2020343 https://bugzilla.redhat.com/show_bug.cgi?id=2020343
ASA-202111-1 https://security.archlinux.org/ASA-202111-1
AVG-2526 https://security.archlinux.org/AVG-2526
CVE-2021-21695 https://nvd.nist.gov/vuln/detail/CVE-2021-21695
GHSA-cvvm-4cr9-r436 https://github.com/advisories/GHSA-cvvm-4cr9-r436
RHSA-2021:4799 https://access.redhat.com/errata/RHSA-2021:4799
RHSA-2021:4801 https://access.redhat.com/errata/RHSA-2021:4801
RHSA-2021:4827 https://access.redhat.com/errata/RHSA-2021:4827
RHSA-2021:4829 https://access.redhat.com/errata/RHSA-2021:4829
RHSA-2021:4833 https://access.redhat.com/errata/RHSA-2021:4833
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-21695.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:H/PR:N/UI:N/S:C/C:H/I:H/A:H Found at https://github.com/jenkinsci/jenkins
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:H/PR:N/UI:N/S:C/C:H/I:H/A:H Found at https://github.com/jenkinsci/jenkins/commit/63cde2daadc705edf086f2213b48c8c547f98358
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:H/PR:N/UI:N/S:C/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2021-21695
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:H/PR:N/UI:N/S:C/C:H/I:H/A:H Found at https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455
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:H/PR:N/UI:N/S:C/C:H/I:H/A:H Found at http://www.openwall.com/lists/oss-security/2021/11/04/3
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 0.67084
EPSS Score 0.00528
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T12:48:59.937914+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/maven/org.jenkins-ci.main/jenkins-core/CVE-2021-21695.yml 38.0.0