What is CVE-2021-21655?

CVE-2021-21655 is a high-severity vulnerability in Jenkins P4, classified under Cross-Site Request Forgery (CSRF). CVSS score: 7.1/10. Published 2021-05-11.

How severe is CVE-2021-21655?

High severity. CVSS v3 base score is 7.1 out of 10.

CSRF in Jenkins P4

CVE-2021-21655

A cross-site request forgery (CSRF) vulnerability in Jenkins P4 Plugin 1.11.4 and earlier allows attackers to connect to an attacker-specified Perforce server using attacker-specified username and password.

Vulnerability class: CSRF (Cross-Site Request Forgery)

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

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (42.2th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 42.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

Jenkins P4
Jenkins Project P4 Plugin — versions unspecified

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

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

Frequently asked questions

What is CVE-2021-21655?: CVE-2021-21655 is a high-severity vulnerability in Jenkins P4, classified under Cross-Site Request Forgery (CSRF). CVSS score: 7.1/10. Published 2021-05-11.
How severe is CVE-2021-21655?: High severity. CVSS v3 base score is 7.1 out of 10.