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Description

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.

PUBLISHED Reserved 2026-03-23 | Published 2026-03-31 | Updated 2026-03-31 | Assigner GitHub_M




LOW: 2.8CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

Problem types

CWE-129: Improper Validation of Array Index

Product status

< 5.17.1
affected

References

github.com/...go-git/security/advisories/GHSA-gm2x-2g9h-ccm8

github.com/go-git/go-git/releases/tag/v5.17.1

cve.org (CVE-2026-33762)

nvd.nist.gov (CVE-2026-33762)

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