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☕ Maven
Not in CISA KEV
HIGH severity

CVE-2021-21655 — p4

HIGHFix: jenkinsci/p4-plugin@6b0237b

CVE-2021-21655 is a high-severity (CVSS 7.1) Cross-Site Request Forgery (CSRF) vulnerability in org.jenkins-ci.plugins:p4. A fix is available for org.jenkins-ci.plugins:p4 — see the affected versions and patch details below.

Cross-Site Request Forgery in Jenkins P4 Plugin

Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 5, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs44th percentile — riskier than 44% of all scored CVEsHighest risk
0.00%0.34%0.68%1.02%0.2%0.5%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
☕org.jenkins-ci.plugins:p4

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

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.

Jenkins P4 Plugin 1.11.5 requires POST requests for the affected HTTP endpoints.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.jenkins-ci.plugins:p4all versions1.11.5org.jenkins-ci.plugins:p4:1.11.5

Affected Products

1 product · 1 configurations
Application
p4jenkins
≤ 1.11.4
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.jenkins-ci.plugins:p4, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.jenkins-ci.plugins:p4 to 1.11.5 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-21655 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

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. Jenkins P4 Plugin 1.11.5 requires POST requests for the affected HTTP endpoints.
O3 Security · Impact-Aware SCA

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CVE-2021-21655: p4 CSRF — Fixed in 1.11.5