{"id":"GHSA-w5pp-99ch-qj29","aliases":["GO-2026-5693"],"url":"https://o3.security/vulnerability/GHSA-w5pp-99ch-qj29","summary":"go-git: Malformed Git object data may cause panics or resource exhaustion","details":"### Impact\nSeveral denial-of-service issues were identified in `go-git` when parsing maliciously crafted Git repository data.\n\nAn attacker may craft a malicious `.pack`, `.idx` or loose objects that causes an application using an affected version of `go-git` to panic or consume excessive resources.\n\nThis can lead to denial of service in applications that use `go-git` to clone, fetch, open, or otherwise process untrusted repositories or Git object data.\n\nExploitation requires the ability to alter read-only files such as `.pack` or `.idx` from the local repository's `.git/objects/pack/` directory. Alternatively, the user would need to be interacting with a malicious remote server, which is not recommended and exposes users to a broader class of security risks beyond this issue.\n\n### Patches\nUsers should upgrade to a patched version in order to mitigate this vulnerability. Versions prior to `v5` are likely to be affected, users are recommended to upgrade to a supported `go-git` version.\n\n### Credits\ngo-git thanks @kodareef5, @AyushParkara and @N0zoM1z0 for reporting this in four separate reports. 🙇","published":"2026-05-29T19:43:27Z","modified":"2026-07-24T19:11:51.594258547Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/go-git/go-git/v5","fixedVersion":"5.19.1"},{"ecosystem":"Go","name":"github.com/go-git/go-git/v6","fixedVersion":"6.0.0-alpha.4"}],"fix":null,"references":[{"type":"WEB","url":"https://github.com/go-git/go-git/security/advisories/GHSA-w5pp-99ch-qj29"},{"type":"PACKAGE","url":"https://github.com/go-git/go-git"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-24T19:11:51.594258547Z"}}