{"id":"UBUNTU-CVE-2026-42284","details":"GitPython is a python library used to interact with Git repositories. Prior to version 3.1.47, _clone() validates multi_options as the original list, then executes shlex.split(\" \".join(multi_options)). A string like \"--branch main --config core.hooksPath=/x\" passes validation (starts with --branch), but after split becomes [\"--branch\", \"main\", \"--config\", \"core.hooksPath=/x\"]. Git applies the config and executes attacker hooks during clone. This issue has been patched in version 3.1.47.","modified":"2026-05-27T10:16:46.702607913Z","published":"2026-05-07T19:16:00Z","related":["USN-8303-1"],"upstream":["CVE-2026-42284"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-42284"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-42284"},{"type":"REPORT","url":"https://github.com/gitpython-developers/GitPython/security/advisories/GHSA-x2qx-6953-8485"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8303-1"}],"affected":[{"package":{"name":"python-git","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/python-git?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.7-1ubuntu0.1~esm4"}]}],"versions":["2.1.11-1","3.0.4-1","3.0.5-1","3.0.7-1","3.0.7-1ubuntu0.1~esm1","3.0.7-1ubuntu0.1~esm2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"3.0.7-1ubuntu0.1~esm4","binary_name":"python3-git"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42284.json"}},{"package":{"name":"python-git","ecosystem":"Ubuntu:Pro:22.04:LTS","purl":"pkg:deb/ubuntu/python-git?arch=source&distro=esm-apps%2Fjammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.24-1ubuntu0.1~esm3"}]}],"versions":["3.1.14-1","3.1.23-1","3.1.24-1","3.1.24-1ubuntu0.1~esm1","3.1.24-1ubuntu0.1~esm2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"3.1.24-1ubuntu0.1~esm3","binary_name":"python3-git"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42284.json"}},{"package":{"name":"python-git","ecosystem":"Ubuntu:Pro:24.04:LTS","purl":"pkg:deb/ubuntu/python-git?arch=source&distro=esm-apps%2Fnoble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.37-3ubuntu0.1~esm2"}]}],"versions":["3.1.30-1","3.1.37-1","3.1.37-3"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"3.1.37-3ubuntu0.1~esm2","binary_name":"python3-git"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42284.json"}},{"package":{"name":"python-git","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/python-git?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.44-1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.1.44-1","binary_name":"python3-git"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42284.json"}},{"package":{"name":"python-git","ecosystem":"Ubuntu:Pro:26.04:LTS","purl":"pkg:deb/ubuntu/python-git?arch=source&distro=esm-apps%2Fresolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.46-1ubuntu0.1~esm1"}]}],"versions":["3.1.44-1","3.1.45-1","3.1.46-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"3.1.46-1ubuntu0.1~esm1","binary_name":"python3-git"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-42284.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}