Arbitrary file overwrite and read via forwarded options
Published Aug 13, 2026 · Updated Aug 13, 2026
Path traversal in GitPython before 3.1.57 allows remote authenticated users to overwrite or read arbitrary files via forwarded Git options. IndexFile.checkout() and TagReference.create() pass caller-controlled kwargs to git checkout-index and git tag without invoking the unsafe-option guard. Exploitation requires a consuming application to forward attacker-influenced kwargs; --prefix writes repository content and -F returns file contents in-band.
Summary
What happened
Path traversal in GitPython before 3.1.57 allows remote authenticated users to overwrite or read arbitrary files via forwarded Git options. IndexFile.checkout() and TagReference.create() pass caller-controlled kwargs to git checkout-index and git tag without invoking the unsafe-option guard. Exploitation requires a consuming application to forward attacker-influenced kwargs; --prefix writes repository content and -F returns file contents in-band.
The record
- CVE
- CVE-2026-73620
- Published
- Aug 13, 2026
- Updated
- Aug 13, 2026
- Vendor
- GitPython Developers
- Product
- GitPython
- Classifications
- CWE-73, CWE-22, CWE-200
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 13, 2026CVE publishedPublication date reported by the CVE source.
- Aug 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <3.1.57
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GitPython unsafe-option forwarding reproductionsproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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