{"id":"CVE-2026-45022","summary":"go-git: Improper parsing of specially crafted objects may lead to inconsistent interpretation compared to upstream Git","details":"go-git is an extensible git implementation library written in pure Go. Prior to 5.19.0 and 6.0.0-alpha.3, go-git may parse malformed Git objects in a way that differs from upstream Git. When commit or tag objects contain ambiguous or malformed headers, go-git’s decoded representation may expose values differently from how Git itself would interpret or reject the same object. Additionally, go-git’s commit signing and verification logic operates over commit data reconstructed from go-git’s parsed representation rather than the original raw object bytes. As a result, go-git may sign or verify a commit payload that is not byte-for-byte equivalent to the object stored in the repository. This can cause a signature to appear valid for a commit whose displayed or effective metadata differs from the object that was intended to be signed. This vulnerability is fixed in 5.19.0 and 6.0.0-alpha.3.","aliases":["GHSA-389r-gv7p-r3rp"],"modified":"2026-06-06T04:01:30.743318583Z","published":"2026-05-27T14:54:47.872Z","related":["CGA-8x53-pqv6-wqhw","openSUSE-SU-2026:10769-1"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-180","CWE-345"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45022.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45022.json"},{"type":"ADVISORY","url":"https://github.com/go-git/go-git/security/advisories/GHSA-389r-gv7p-r3rp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-45022"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/go-git/go-git","events":[{"introduced":"5c776e15a11be5d2dfc6df27692bf867a69c37d8"},{"fixed":"c4e48f81a870ba54402cc6f3fdef8efbecd563fc"}]}],"versions":["v6.0.0-alpha.2","v6.0.0-alpha.1"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-45022.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N"}]}