What is CVE-2021-21692?

CVE-2021-21692 is a critical-severity vulnerability in Jenkins, classified under Path Traversal. CVSS score: 9.8/10. Published 2021-11-04.

How severe is CVE-2021-21692?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Path Traversal in Jenkins

CVE-2021-21692

FilePath#renameTo and FilePath#moveAllChildrenTo in Jenkins 2.318 and earlier, LTS 2.303.2 and earlier only check 'read' agent-to-controller access permission on the source path, instead of 'delete'.

Vulnerability class: Path Traversal (Directory Traversal)

Published 2021-11-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.021 (81.0th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 81st percentile — 81.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.021 · newest: 0.021 · change: 0.000

Affected products

Jenkins
Jenkins Project — versions unspecified

Weakness classification (CWE)

CWE-22 — Path Traversal

References

www.jenkins.io/security/advisory/2021-11-04/ (Vendor Advisory)

Frequently asked questions

What is CVE-2021-21692?: CVE-2021-21692 is a critical-severity vulnerability in Jenkins, classified under Path Traversal. CVSS score: 9.8/10. Published 2021-11-04.
How severe is CVE-2021-21692?: Critical severity. CVSS v3 base score is 9.8 out of 10.