Bug 2440637 (CVE-2026-27100) - CVE-2026-27100 org.jenkins-ci.main/jenkins-core: Jenkins: Information disclosure via unauthorized access to build parameters
Summary: CVE-2026-27100 org.jenkins-ci.main/jenkins-core: Jenkins: Information disclos...
Keywords:
Status: NEW
Alias: CVE-2026-27100
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-02-18 15:03 UTC by OSIDB Bzimport
Modified: 2026-02-18 20:50 UTC (History)
0 users

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Description OSIDB Bzimport 2026-02-18 15:03:09 UTC 
Jenkins 2.550 and earlier, LTS 2.541.1 and earlier accepts Run Parameter values that refer to builds the user submitting the build does not have access to, allowing attackers with Item/Build and Item/Configure permission to obtain information about the existence of jobs, the existence of builds, and if a specified build exists, its display name.
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