CVE-2021-21683

The file browser in Jenkins 2.314 and earlier, LTS 2.303.1 and earlier may interpret some paths to files as absolute on Windows, resulting in a path traversal vulnerability allowing attackers with Overall/Read permission (Windows controller) or Job/Workspace permission (Windows agents) to obtain the contents of arbitrary files.

• CWE-22

• http://www.openwall.com/lists/oss-security/2021/10/06/1Mailing List, Third Party Advisory
• https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2481Vendor Advisory
• http://www.openwall.com/lists/oss-security/2021/10/06/1Mailing List, Third Party Advisory
• https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2481Vendor Advisory

Published

Oct 6, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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• CVE-2021-21677Jenkins Code Coverage API Plugin 1.4.0 and earlier does not …8.8
• CVE-2021-21678Jenkins SAML Plugin 2.0.7 and earlier allows attackers to cr…8.8
• CVE-2021-21679Jenkins Azure AD Plugin 179.vf6841393099e and earlier allows…8.8
• CVE-2021-21680Jenkins Nested View Plugin 1.20 and earlier does not configu…7.1
• CVE-2021-21681Jenkins Nomad Plugin 0.7.4 and earlier stores Docker passwor…5.5
• CVE-2021-21682Jenkins 2.314 and earlier, LTS 2.303.1 and earlier accepts n…4.3
• CVE-2021-21684Jenkins Git Plugin 4.8.2 and earlier does not escape the Git…6.1
• CVE-2021-21685Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not …9.1
• CVE-2021-21686File path filters in the agent-to-controller security subsys…8.1
• CVE-2021-21687Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not …9.1
• CVE-2021-21688The agent-to-controller security check FilePath#reading(File…7.5
• CVE-2021-21689FilePath#unzip and FilePath#untar were not subject to any ag…9.1