{"id":"GHSA-w5pp-99ch-qj29","aliases":["GO-2026-5693"],"title":"go-git: Malformed Git object data may cause panics or resource exhaustion","summary":"go-git: Malformed Git object data may cause panics or resource exhaustion","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","vendor":"go-git","product":"github.com/go-git/go-git/v5","ecosystem":"go","affected":["github.com/go-git/go-git/v5 < 5.19.1","github.com/go-git/go-git/v6 < 6.0.0-alpha.4"],"patched":["github.com/go-git/go-git/v5 5.19.1","github.com/go-git/go-git/v6 6.0.0-alpha.4"],"published":"2026-05-29","updated":"2026-07-24","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-w5pp-99ch-qj29","references":[{"url":"https://github.com/go-git/go-git/security/advisories/GHSA-w5pp-99ch-qj29"},{"url":"https://github.com/go-git/go-git"}],"tags":["osv","go"],"ingestedAt":"2026-07-25T19:08:12.054Z","slug":"GHSA-w5pp-99ch-qj29","body":"## Overview\n\n### 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. 🙇\n\n## Affected packages\n\n- `github.com/go-git/go-git/v5 < 5.19.1`\n- `github.com/go-git/go-git/v6 < 6.0.0-alpha.4`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `github.com/go-git/go-git/v5 5.19.1`\n- `github.com/go-git/go-git/v6 6.0.0-alpha.4`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}