CVE-2026-67322
GitPython before 3.1.52 Environment Variable Exfiltration via clone_from
HIGH 8.7EPSS 0.3%
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.
- Affected
- gitpython-developers · GitPython
- CVSS v4.0 VULNCHECK
- 8.7 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v3.1 VULNCHECK
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - EPSS
- 0.33% chance of exploitation in the next 30 days, 24th percentile
- Published
- 2026-08-01
- Updated
- 2026-08-14
Proof-of-concept exploits (1)
Security advisories
- gitpython-developers/GitPython/security/advisories/GHSA-rwj8-pgh3-r573
- https://www.vulncheck.com/advisories/gitpython-before-environment-variable-exfiltration-v…