Bug 2526214

Summary: CVE-2026-73621 GitPython: GitPython: Arbitrary File Truncation via Commit.count() Argument Injection [fedora-all]
Product: [Fedora] Fedora Reporter: Vipul Nair <vinair>
Component: GitPythonAssignee: Lubomír Sedlář <lsedlar>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: athoscribeiro, carlwgeorge, code, igor.raits, lsedlar
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["e1b8becc-fe89-4aac-93fe-1dc8a5262321"]}
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Clone Of: Environment:
Last Closed: 2026-08-31 09:25:53 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 2515274    

Description Vipul Nair 2026-08-31 09:21:32 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

GitPython before 3.1.56 contains an argument injection vulnerability in the Commit.count() method, which forwards keyword arguments to 'git rev-list' without the check_unsafe_options guard present in the sibling iter_items method. An attacker who can control options passed to Commit.count (e.g., via an application that forwards a user-supplied options dict) can supply output=<path>, causing 'git rev-list --output=<path>' to open and truncate the target file to zero bytes before revision parsing. This allows destruction/blanking of an arbitrary file at the process's privilege level (no content control, 0-byte truncation).
Comment 1 Ben Beasley 2026-08-31 09:25:53 UTC 
GitPython ≥ 3.1.56 is already in all Fedora stable repos.