Vulnerability in Go-Git
CVE-2026-33762
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 · last modified .
CVSS v3 metric
CVSS v3 base score 2.8 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.002 (4.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 4th percentile — 4.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Go-Git — versions < 5.17.1
- Go-Git Project
Weakness classification (CWE)
References
- github.com/go-git/go-git/security/advisories/GHSA-gm2x-2g9h-ccm8 (Vendor Advisory)
- github.com/go-git/go-git/releases/tag/v5.17.1 (Product, Release Notes)
Frequently asked questions
- What is CVE-2026-33762?
- CVE-2026-33762 is a low-severity vulnerability in Go-Git, classified under Improper Validation of Array Index. CVSS score: 2.8/10. Published 2026-03-31.
- How severe is CVE-2026-33762?
- Low severity. CVSS v3 base score is 2.8 out of 10.