{"id":"CVE-2026-34165","aliases":["GHSA-jhf3-xxhw-2wpp","GO-2026-4910"],"url":"https://o3.security/vulnerability/CVE-2026-34165","summary":"go-git: Maliciously crafted idx file can cause asymmetric memory consumption","details":"go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause asymmetric memory consumption, potentially exhausting available memory and resulting in a denial-of-service (DoS) condition. Exploitation requires write access to the local repository's .git directory, it order to create or alter existing .idx files. This issue has been patched in version 5.17.1.","published":"2026-03-31T13:46:37.688Z","modified":"2026-08-12T03:51:36.829541280Z","cvss":{"score":5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H"},"epss":{"score":0.00147,"percentile":0.04191,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/go-git/go-git/v5","fixedVersion":"5.17.1"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/go-git/go-git/releases/tag/v5.17.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34165.json"},{"type":"ADVISORY","url":"https://github.com/go-git/go-git/security/advisories/GHSA-jhf3-xxhw-2wpp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34165"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:36.829541280Z"}}