CVE-2021-21654: Jenkins P4 Plugin 1.11.4 and earlier does not perform permission checks in multiple HTTP endpoints, allowing a

Q: How do I fix CVE-2021-21654?

p4: upgrade to newer than 1.11.4. Exact commands for each OS are on this page.

Q: Is CVE-2021-21654 being exploited?

CVE-2021-21654 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-21654 affect?

CVE-2021-21654 affects p4. Severity is medium (CVSS 4.3). 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 pa

Q: How urgent is CVE-2021-21654?

Priority 33/100. No elevated risk signals yet.

Routine

MEDIUM 4.3UPGRADE

CVE-2021-21654 is a medium-severity flaw (CVSS 4.3) affecting p4. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	1.3% (top 30%)
CISA exploited list	No
Published	2021-05-11
Last modified	2026-06-17

Publisher (CNA): Jenkins Project · Vendor: jenkins

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-05-11 15:15 UTCPublished CVE record published
2026-06-17 03:35 UTCUpdated Record last modified

jenkins p4 UPGRADE

Affected: <= 1.11.4

Fixed in: newer than 1.11.4

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy p4 || rpm -q p4 || p4 --version

2. UPGRADE to newer than 1.11.4 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade p4

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade p4

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-21654?

p4: upgrade to newer than 1.11.4. Exact commands for each OS are on this page.

Is CVE-2021-21654 being exploited?

CVE-2021-21654 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-21654 affect?

CVE-2021-21654 affects p4. Severity is medium (CVSS 4.3). 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 pa

How urgent is CVE-2021-21654?

Priority 33/100. No elevated risk signals yet.

Software pages

Jenkins vulnerabilities

Related CVEs

CVE-2022-25171 HIGH 7.4 UPGRADE The package p4 before 0.0.7 are vulnerable to Command Injection via the run() function due to improper input s
CVE-2021-21655 HIGH 7.1 UPGRADE A cross-site request forgery (CSRF) vulnerability in Jenkins P4 Plugin 1.11.4 and earlier allows attackers to
CVE-2020-2142 MEDIUM 4.3 UPGRADE A missing permission check in Jenkins P4 Plugin 1.10.10 and earlier allows attackers with Overall/Read permiss
CVE-2020-2141 MEDIUM 4.3 UPGRADE A cross-site request forgery vulnerability in Jenkins P4 Plugin 1.10.10 and earlier allows attackers to trigge

References

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