Bug 2527617 (CVE-2026-84657)

Summary: CVE-2026-84657 jenkins: Jenkins: Unauthorized build cancellation via CLI command
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in Jenkins. The build command-line interface (CLI) does not properly enforce permissions when canceling a build. An attacker with `Item/Build` permission can exploit this by using the `-s` flag to cancel builds initiated by other users, leading to unauthorized disruption of ongoing processes.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-09-02 16:04:02 UTC
In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the build CLI command does not check the Item/Cancel permission when using the -s flag to cancel a build triggered to wait for completion, allowing attackers with Item/Build permission to cancel builds started by other users.