🛡️ CVE-2021-21682 — jenkins

🟡 CVSS 5.0 — Medium ✅ No Known Exploit OSV
5.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Improper handling of equivalent directory names on Windows in Jenkins

Jenkins stores jobs and other entities on disk using their name shown on the UI as file and folder names.

On Windows, when specifying a file or folder with a trailing dot character (example.), the file or folder will be treated as if that character was not present (example). As both are legal names for jobs and other entities in Jenkins 2.314 and earlier, LTS 2.303.1 and earlier, this could allow users with the appropriate permissions to change or replace configurations of jobs and other entities.

Jenkins 2.315, LTS 2.303.2 does not allow names of jobs and other entities to end with a dot character.

Affected software

CVE-2021-21682 is recorded against 2 packages.

  • jenkins
  • org.jenkins-ci.main:jenkins-core (fixed in 2.303.2)

Timeline and source

Published on 6 March 2024 and last revised on 3 April 2025. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.openwall.com (Web)
www.jenkins.io (Web)
nvd.nist.gov (Web)

Details

Severity MEDIUM
CVSS Score 5.0
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2024-03-06
Updated 2026-08-12
Modified 2025-04-03
Fix URL N/A

Affected Packages

Software From version Fixed in
jenkins — —
org.jenkins-ci.main:jenkins-core — 2.303.2

Similar Threats

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