CVE-2026-33762
LowCVSS 2.8Exploitation Probability (EPSS)
Low risk5th percentile - higher than 5% of all known CVEs
Summary
go-git is a pure Go Git implementation library. Prior to version 5.17.1, the index decoder for format version 4 fails to validate the path name prefix length before applying it to the previously decoded path name. A maliciously crafted index file can trigger an out-of-bounds slice operation, resulting in a runtime panic during normal index parsing. This issue only affects Git index format version 4; earlier formats (v2 and v3) are not vulnerable.
Risk Assessment
An attacker can cause a crash in applications using go-git to parse a malicious index file, leading to denial of service (DoS).
Recommendation
Update go-git to version 5.17.1 or later.
Original NVD description (English source)
go-git is an extensible git implementation library written in pure Go. Prior to version 5.17.1, go-git’s index decoder for format version 4 fails to validate the path name prefix length before applying it to the previously decoded path name. A maliciously crafted index file can trigger an out-of-bounds slice operation, resulting in a runtime panic during normal index parsing. This issue only affects Git index format version 4. Earlier formats (go-git supports only v2 and v3) are not vulnerable to this issue. This issue has been patched in version 5.17.1.