Unencrypted Build Authorization Tokens Vulnerability in Jenkins
CVE-2025-67637

4.3MEDIUM

Key Information:

Vendor

Jenkins
Status
Jenkins
Vendor
CVE Published:
10 December 2025

What is CVE-2025-67637?

Jenkins versions up to 2.540, including LTS versions 2.528.2 and earlier, improperly store build authorization tokens in the job config.xml files. This unencrypted storage allows users with Item/Extended Read permissions or anyone with access to the Jenkins controller file system to view these tokens. The exposure of such sensitive information poses a significant risk, potentially allowing unauthorized users to execute builds or gain further access to Jenkins functionalities.

Affected Version(s)

Jenkins 2.541

Jenkins 2.541

Jenkins 2.528.3 < 2.528.*

References

https://www.jenkins.io/security/advisory/2025-12-10/#SECU...
vendor-advisory

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-67637 : Unencrypted Build Authorization Tokens Vulnerability in Jenkins