CVE-2026-33762

unknown

Published 2026-03-30 · Modified 2026-04-08

CVSS v3

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

CVSS v2

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VIR risk

—

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.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-33762

OS impact

OS	Version	Status	Fixed in
debian	bookworm	affected
debian	forky	fixed	`5.17.1-1`
debian	sid	fixed	`5.17.1-1`
debian	trixie	affected

Package impact

Ecosystem	Package	Vulnerable	Fixed
Go	github.com/go-git/go-git/v5	`<5.17.1`	`5.17.1`
Go	github.com/go-git/go-git
Go	github.com/go-git/go-git/v4

References

Verify integrity in audit chain (admin only). AS-IS.