Bug 2569039 (CVE-2026-124584)

Summary: CVE-2026-124584 patool: patool: Arbitrary file overwrite via insecure symlink following in gzip extraction
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 patool. The gzip extraction function mishandles symbolic links (shortcuts pointing to other files) during archive extraction. A local attacker can exploit this flaw to follow symlinks and modify or overwrite arbitrary files outside the intended destination directory, potentially leading to unauthorized data modification or a denial of service.
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Description OSIDB Bzimport 2026-11-09 10:31:22 UTC
A vulnerability has been found in wummel patool 4.1.0. This vulnerability affects the function extract_gzip of the file patoolib/fileutil.py of the component Gzip Extraction Handler. The manipulation leads to symlink following. Local access is required to approach this attack. The researcher claims to have submitted a GHSA on the repository of the project.