CVE-2021-21626

Name: CVE-2021-21626
Creator: NVD / NIST
Published: 2021-03-18T14:15:13.49+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.86%

Last modified Jun 17, 2026

CVE-2021-21626 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Jenkins Warnings Next Generation Plugin 8.4.4 and earlier does not perform a permission check in methods implementing form validation, allowing attackers with Item/Read permission but without Item/Workspace or Item/Configure permission to check whether attacker-specified file patterns match workspace contents.. EPSS estimates a 0.86% chance of exploitation in the next 30 days.

Description

Jenkins Warnings Next Generation Plugin 8.4.4 and earlier does not perform a permission check in methods implementing form validation, allowing attackers with Item/Read permission but without Item/Workspace or Item/Configure permission to check whether attacker-specified file patterns match workspace contents.

Metrics

CVSS 3.1

4.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

0.86%

53.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-862

Affected Software

Vendor	Product	Versions
Jenkins	Warnings Next Generation	<= 8.4.4

References

http://www.openwall.com/lists/oss-security/2021/03/18/5Third Party Advisory
https://www.jenkins.io/security/advisory/2021-03-18/#SECURITY-2041Vendor Advisory
http://www.openwall.com/lists/oss-security/2021/03/18/5Third Party Advisory
https://www.jenkins.io/security/advisory/2021-03-18/#SECURITY-2041Vendor Advisory

Timeline

Published: Mar 18, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-21626?

How severe is CVE-2021-21626?

CVE-2021-21626 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.86% probability of exploitation in the next 30 days.

How do I fix CVE-2021-21626?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-21626?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST