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Advisory record · GHSA-r9mr-m37c-5fr3

GitPython: Unsafe git option guard bypass via single-character kwarg value token smuggling enables arbitrary command execution

CVSS 8.7 HighEPSS 0.0068 · 52nd percentile

Published by the GitHub Advisory Database at 24 Jul 2026, 16:42 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
gitpythonPyPI<3.1.543.1.54
Identifiers
GHSA-r9mr-m37c-5fr3 · CVE-2026-73625 · PYSEC-2026-3953
Weakness (CWE)
CWE-78 · CWE-88
Tags
Published
24 Jul 2026
Updated
10 Sept 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

GitPython versions before 3.1.54 (fixed in 3.1.54) can be made to run arbitrary commands with default settings. The unsafe-option check only inspects kwarg names, so an option token hidden in the value of a single-character kwarg is passed to git as a separate argument, such as --upload-pack. An attacker who can supply options to guarded methods like clone_from, fetch, or ls_remote can achieve command execution on the host. Upgrade to GitPython 3.1.54 or later.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.7 High 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CNA (VulnCheck)
  • CISA KEV Not listed.
  • EPSS 0.0068, the 52nd percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:10 UTC First seen by agentprime
  2. 31 Oct 2026, 14:10 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.