gitpython-developers GitPython up to 3.1.56 Option IndexFile.checkout/TagReference.create kwargs input validation

Summaryinfo

A vulnerability, which was classified as critical, was found in gitpython-developers GitPython up to 3.1.56. This impacts the function IndexFile.checkout/TagReference.create of the component Option Handler. Executing a manipulation of the argument kwargs can lead to input validation. This vulnerability appears as CVE-2026-73620. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability has been found in gitpython-developers GitPython up to 3.1.56 and classified as critical. This vulnerability affects the function IndexFile.checkout/TagReference.create of the component Option Handler. The manipulation of the argument kwargs with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

GitPython before 3.1.57 fails to guard git option forwarding in IndexFile.checkout() and TagReference.create(), allowing attackers to pass unsafe options via kwargs. Attackers can use --prefix to overwrite arbitrary files with repository content or -F to read arbitrary files returned in-band.

The advisory is available at github.com. This vulnerability was named CVE-2026-73620 since 08/13/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit.

Upgrading to version 3.1.57 eliminates this vulnerability.

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Productinfo

Type

• Programming Language Software

Vendor

• gitpython-developers

Name

• GitPython

Version

• 3.1.0
• 3.1.1
• 3.1.2
• 3.1.3
• 3.1.4
• 3.1.5
• 3.1.6
• 3.1.7
• 3.1.8
• 3.1.9
• 3.1.10
• 3.1.11
• 3.1.12
• 3.1.13
• 3.1.14
• 3.1.15
• 3.1.16
• 3.1.17
• 3.1.18
• 3.1.19
• 3.1.20
• 3.1.21
• 3.1.22
• 3.1.23
• 3.1.24
• 3.1.25
• 3.1.26
• 3.1.27
• 3.1.28
• 3.1.29
• 3.1.30
• 3.1.31
• 3.1.32
• 3.1.33
• 3.1.34
• 3.1.35
• 3.1.36
• 3.1.37
• 3.1.38
• 3.1.39
• 3.1.40
• 3.1.41
• 3.1.42
• 3.1.43
• 3.1.44
• 3.1.45
• 3.1.46
• 3.1.47
• 3.1.48
• 3.1.49
• 3.1.50
• 3.1.51
• 3.1.52
• 3.1.53
• 3.1.54
• 3.1.55
• 3.1.56

Website

• Product: https://github.com/gitpython-developers/GitPython/

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