{"id":"CVE-2026-67324","summary":"GitPython 3.1.50 Authentication Bypass via Joined Short Options","details":"GitPython 3.1.50 fails to recognize joined short-option forms such as -u\u003cvalue\u003e (the short form of --upload-pack=\u003cvalue\u003e) when enforcing its default unsafe-option gate. When an application passes attacker-influenced clone options into Repo.clone_from(..., multi_options=..., allow_unsafe_options=False), an attacker can supply -u\u003chelper\u003e to bypass the gate that blocks --upload-pack/-u, causing Git to execute the specified helper command during clone. Fixed in 3.1.51.","aliases":["GHSA-v396-v7q4-x2qj"],"modified":"2026-08-03T03:30:12.443183750Z","published":"2026-08-01T12:22:18.154Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-78"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67324.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67324.json"},{"type":"ADVISORY","url":"https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-v396-v7q4-x2qj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67324"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/gitpython-authentication-bypass-via-joined-short-options"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/gitpython-developers/gitpython","events":[{"introduced":"5a294a6fc7ed5dc0946d4b576257bf926178f269"},{"fixed":"7b0764d309334b0f27f503d7fa1a395cbd165de0"}],"database_specific":{"extracted_events":[{"introduced":"3.1.50"},{"fixed":"3.1.51"}],"source":"AFFECTED_FIELD"}}],"versions":["3.1.50"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-67324.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}