{"id":"CVE-2026-34165","title":"go-git is an extensible git implementation library written in pure Go","summary":"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, pot…","severity":"medium","cvss":5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-191","CWE-770"],"vendor":"go-git_project","product":"go-git","affected":["go-git >= 5.0.0, < 5.17.1"],"patched":["go-git 5.17.1"],"published":"2026-03-31","updated":"2026-07-24","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-34165","references":[{"url":"https://github.com/go-git/go-git/releases/tag/v5.17.1","label":"security-advisories@github.com"},{"url":"https://github.com/go-git/go-git/security/advisories/GHSA-jhf3-xxhw-2wpp","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00147,"epssPercentile":0.04337,"ingestedAt":"2026-07-24T21:39:13.326Z","slug":"CVE-2026-34165","body":"## Overview\n\ngo-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.\n\n## Affected\n\n- `go-git >= 5.0.0, < 5.17.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `go-git 5.17.1`","depth":"sunlit","depthScore":28,"depthScoreParts":{"impact":27.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}