Access Control Vulnerability in Jenkins by CloudBees
CVE-2026-27100

4.3MEDIUM

Key Information:

Vendor

Jenkins
Status
Jenkins
Vendor
CVE Published:
18 February 2026

What is CVE-2026-27100?

An access control vulnerability in Jenkins allows users with limited permissions to access run parameters tied to jobs they are not authorized to see. Specifically, it permits users with Item/Build and Item/Configure permissions to discern the existence of jobs and builds, along with sensitive information such as display names of specific builds. This risk highlights the need for enhanced access controls to protect against unauthorized information disclosure.

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Affected Version(s)

Jenkins 2.551

Jenkins 2.551

Jenkins 2.541.2 < 2.541.*

References

https://www.jenkins.io/security/advisory/2026-02-18/#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

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