What is CVE-2021-21654?

CVE-2021-21654 is a medium-severity vulnerability in Jenkins P4. CVSS score: 4.3/10. Published 2021-05-11.

How severe is CVE-2021-21654?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Jenkins P4

CVE-2021-21654

Jenkins P4 Plugin 1.11.4 and earlier does not perform permission checks in multiple HTTP endpoints, allowing attackers with Overall/Read permission to connect to an attacker-specified Perforce server using attacker-specified username and password.

Published 2021-05-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.013 (69.4th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Jenkins P4
Jenkins Project P4 Plugin — versions unspecified

References

www.jenkins.io/security/advisory/2021-05-11/ (Vendor Advisory)

Frequently asked questions

What is CVE-2021-21654?: CVE-2021-21654 is a medium-severity vulnerability in Jenkins P4. CVSS score: 4.3/10. Published 2021-05-11.
How severe is CVE-2021-21654?: Medium severity. CVSS v3 base score is 4.3 out of 10.