Authenticated file overwrite via unchecked diff options
Published Aug 13, 2026 · Updated Aug 13, 2026
Argument injection in GitPython before 3.1.54 allows remote authenticated users to overwrite files through Diffable.diff. Diffable.diff forwards kwargs to git diff without check_unsafe_options and inserts the caller-controlled other value before the option separator, so --output selects an attacker-chosen path. Exploitation requires an embedding application to pass attacker-controlled diff arguments; Git writes patch content with the application's filesystem privileges.
Summary
What happened
Argument injection in GitPython before 3.1.54 allows remote authenticated users to overwrite files through Diffable.diff. Diffable.diff forwards kwargs to git diff without check_unsafe_options and inserts the caller-controlled other value before the option separator, so --output selects an attacker-chosen path. Exploitation requires an embedding application to pass attacker-controlled diff arguments; Git writes patch content with the application's filesystem privileges.
The record
- CVE
- CVE-2026-73624
- Published
- Aug 13, 2026
- Updated
- Aug 13, 2026
- Vendor
- GitPython Developers
- Product
- GitPython
- Classifications
- CWE-88, T1565.001
- 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 <3.1.54
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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
- Diffable.diff --output argument-injection proof of conceptproof 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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