CVE-2026-33762
Missing validation decoding Index v4 files leads to panic in github.com/go-git/go-git
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.
How to fix CVE-2026-33762
To remediate CVE-2026-33762, upgrade the affected package to a fixed version below.
- —no fix listed
- —no fix listed
- —no fix listed
- —upgrade to 5.17.1 or later
- —upgrade to 5.17.1 or later
Is CVE-2026-33762 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (5)
- from 0
- from 0
- from 0
- from 0, < 5.17.1
- from 0, < 5.17.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW2.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L |