GitPython before 3.1.52 Environment Variable Exfiltration via clone_from

Description

GitPython before 3.1.52 is vulnerable to environment-variable exfiltration in Repo.clone_from(). The caller-supplied remote URL is passed through Git.polish_url(), which on non-Cygwin platforms calls os.path.expandvars() on the URL before invoking git clone. An attacker who controls the clone URL can embed $NAME or ${NAME} tokens that are expanded to the values of the hosting process's environment variables (e.g., AWS_SECRET_ACCESS_KEY or GITHUB_TOKEN). The resulting URL, now containing the secret, is transmitted over the network to an attacker-controlled host during the clone attempt, disclosing the secret.

Scores

EPSS (exploitation in 30 days)

0.33% · top 74% of all CVEs (7 Nov 2026)

CISA SSVC

Exploitation: poc · Automatable: yes · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.7.

Weakness

• CWE-200: Exposure of Sensitive Information to an Unauthorized Actor (opens in a new tab)All about CWE-200 and its CVEs

Affected products

• gitpython-developers · GitPython

  • affected < 3.1.52
  • unaffected 3.1.52

Affected packages

From reviewed advisories of the GitHub Advisory Database.

• PyPIGitPythonGHSA-rwj8-pgh3-r573 (opens in a new tab)

References (2)

• GitHub Security Advisory (GHSA-rwj8-pgh3-r573) (opens in a new tab)vendor-advisoryexploit
• VulnCheck Advisory: GitPython before 3.1.52 Environment Variable Exfiltration via clone_from (opens in a new tab)third-party-advisory

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisory GHSA-rwj8-pgh3-r573 (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-67322](https://trackcve.app/badge/CVE-2026-67322.svg)](https://trackcve.app/cve/CVE-2026-67322)

Record last updated 14 Aug 2026, 16:50 UTC.