Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-76221

CVE-2026-76221HIGH

gitpython-developers GitPython — GitPython before 3.1.58 Config Injection via option-name

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   L   N   H   H   H    8.7   .0077   54.2     —

AFFECTED
  Product    Versions     Fixed
  GitPython  unspecified  3.1.58

TIMELINE
  Aug 19  Reserved by VulnCheck
  Aug 19  Published (CNA: VulnCheck)
  Sep 2   EXPLOIT PUBLISHED — CVE-2026-76221 (gitpython-developers GitPython). Public exploit reference added.

CWE-74 · CNA: VulnCheck · CVSS v4.0 · 2 references · NVD status: Analyzed

Description

GitPython before 3.1.58 contains a config-name injection vulnerability in the option-name validator that allows attackers to forge arbitrary git-config directives by injecting equals signs, hash symbols, and whitespace into option names. Attackers can inject malicious option names like 'sshCommand = touch /tmp/RCE #' to execute arbitrary commands via core.sshCommand or core.hooksPath on the next git operation.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 19, 2026	Reserved	Reserved by VulnCheck
August 19, 2026	Published	Published (CNA: VulnCheck)
September 2, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-76221 (gitpython-developers GitPython). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
gitpython-developers	GitPython	—	—	3.1.58

Weaknesses

CWE-74

References (2)

https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-jm78-9fvv-mhgr [Exploit, Vendor Advisory]
https://www.vulncheck.com/advisories/gitpython-before-config-injection-via-option-name [Third Party Advisory]

Authoritative record: CVE-2026-76221 at cve.org

Vendors: gitpython-developers

Weaknesses: CWE-74

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-76221 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.