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Vulnerability record · CVE-2021-21694 · published 4 November 2021

CVE-2021-21694: Jenkins missing authorization vulnerability

Jenkins · Jenkins

FilePath#toURI, FilePath#hasSymlink, FilePath#absolutize, FilePath#isDescendant, and FilePath#get*DiskSpace do not check any permissions in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.

9.8 CVSS 3.1 Critical EPSS 1.6% · top 25.5% CWE-862 · Missing authorization
9.8CVSS 3.1 base score, v2 7.5
1.6%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

FilePath#toURI, FilePath#hasSymlink, FilePath#absolutize, FilePath#isDescendant, and FilePath#get*DiskSpace do not check any permissions in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455 Vendor Advisory
https://www.jenkins.io/security/advisory/2021-11-04/#SECURITY-2455 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-21694), CISA KEV, FIRST EPSS (scores of 2026-10-12). This page is refreshed as NVD updates the record.