{"id":"OESA-2026-4026","summary":"python-GitPython security update","details":"**GitPython*is a python library used to interact with Git repositories.GitPython provides object model read and write access to your git repository. Access repository information conveniently, alter the index directly, handle remotes, or go down to low-level object database access with big-files support.With the new object database abstraction added in 0.3, its even possible to implement your own storage mechanisms, the currently available implementations are 'cgit' and pure python, which is the default.Documentation The latest documentation can be found here: As this version of GitPython depends on GitDB, which in turn needs smmap to work, installation is a bit more involved if you do a manual installation, instead of using pip.\r\n\r\nSecurity Fix(es):\n\nGitPython before 3.1.60 fails to properly validate the git directory location, allowing attackers to impersonate the git directory using tracked files like gitdir, commondir, and HEAD. Attackers can execute arbitrary code by placing a malicious pre-commit hook in the tracked hooks directory that executes when a victim calls index.commit() on a cloned or opened repository.(CVE-2026-87817)\n\nGitPython 3.1.59 fails to restrict the --no-index option in the high-level diff API, allowing attackers to read arbitrary filesystem paths as repository operands. Attackers can combine --no-index with -I/--ignore-matching-lines to create a content-dependent Boolean oracle, repeatedly querying local files to recover single-line secrets through distinguishable success or error responses.(CVE-2026-87818)\n\nGitPython before 3.1.60 contains a regular expression denial of service vulnerability in Actor.name_email_regex that processes commit author and committer fields. Attackers can craft a commit object with a malformed author field containing an unterminated angle bracket to cause quadratic backtracking, exhausting CPU resources for over two minutes per commit access.(CVE-2026-87819)","modified":"2026-09-25T01:45:03.841301181Z","published":"2026-09-25T01:27:26Z","upstream":["CVE-2026-87817","CVE-2026-87818","CVE-2026-87819"],"database_specific":{"severity":"High"},"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4026"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87817"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87818"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-87819"}],"affected":[{"package":{"name":"python-GitPython","ecosystem":"openEuler:24.03-LTS-SP3","purl":"pkg:rpm/openEuler/python-GitPython&distro=openEuler-24.03-LTS-SP3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.59-2.oe2403sp3"}]}],"ecosystem_specific":{"noarch":["python-GitPython-help-3.1.59-2.oe2403sp3.noarch.rpm","python3-GitPython-3.1.59-2.oe2403sp3.noarch.rpm"],"src":["python-GitPython-3.1.59-2.oe2403sp3.src.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-4026.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"}]}