Bug 2482211 (CVE-2026-48921)

Summary: CVE-2026-48921 pipeline-groovy-lib: Jenkins Pipeline Groovy Libraries Plugin: Information disclosure via symbolic links in shared libraries
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in the Jenkins Pipeline: Groovy Libraries Plugin. This vulnerability allows an attacker, who can control the content of a library used by a Pipeline job, to read arbitrary files from the Jenkins controller filesystem. This could lead to the disclosure of sensitive information.
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Description OSIDB Bzimport 2026-05-27 16:02:07 UTC
Jenkins Pipeline: Groovy Libraries Plugin 797.v90ea_a_9b_e45a_0 and earlier does not prohibit symbolic links in shared libraries, allowing attackers able to control the content of a library used by a Pipeline job to read arbitrary files on the Jenkins controller filesystem.