CVE-2026-44740
go-billy: Lack of depth and cycle detection in symlink resolution may lead to infinite loops and resource exhaustion
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
Billy is an interface filesystem abstraction for Go. Prior to versions 5.9.0 and 6.0.0-alpha.1, multiple components may improperly handle crafted or malformed input, resulting in panics, infinite loops, uncontrolled recursion, or excessive resource consumption. These issues arise from insufficient validation and missing safety mechanisms such as cycle detection, recursion limits, or defensive handling of unexpected states when processing untrusted repository data and filesystem structures. This issue has been patched in versions 5.9.0 and 6.0.0-alpha.1.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Deferred | 3.1 | Medium6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.39% · top 67% of all CVEs (6 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.5.
Weakness
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/go-git/go-billy/v5GHSA-m3xc-h892-ggx6 (opens in a new tab)
- Gogithub.com/go-git/go-billy/v6GHSA-m3xc-h892-ggx6 (opens in a new tab)
References (3)
- https://github.com/go-git/go-billy/security/advisories/GHSA-m3xc-h892-ggx6 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/go-git/go-billy/releases/tag/v5.9.0 (opens in a new tab)x_refsource_MISC
- https://github.com/go-git/go-billy/releases/tag/v6.0.0-alpha.1 (opens in a new tab)x_refsource_MISC
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-m3xc-h892-ggx6 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-44740)Record last updated .