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Advisory record · GHSA-jm78-9fvv-mhgr

GitPython: git-config OPTION-name injection via =/#/whitespace bypasses name validator, enabling forged core.sshCommand/hooksPath (RCE)

CVSS 8.7 HighEPSS 0.0049 · 42nd percentile

Published by the GitHub Advisory Database at 7 Aug 2026, 15:46 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
gitpythonPyPI<3.1.583.1.58
Identifiers
GHSA-jm78-9fvv-mhgr · CVE-2026-76221 · PYSEC-2026-3783
Weakness (CWE)
CWE-74 · CWE-88
Tags
Published
7 Aug 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 3.1.58 are vulnerable to git-config option-name injection. The config-name validator does not reject characters such as =, #, or whitespace in option names, so a caller-controlled option name can forge directives like core.sshCommand or core.hooksPath. An attacker who can influence the option name passed to the config writer could achieve remote code execution on the next git operation. Upgrade to GitPython 3.1.58, which contains the fix.

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 0.0049, the 42nd percentile, on 13 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.