CVE-2026-44740go-billy: Lack of depth and cycle detection in symlink resolution may lead to infinite loops and resource exhaustion
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-674, CWE-835
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Jun 1, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
go-git go-billy go_git:go_billy (from the name) | before 5.9.0; before 6.0.0-alpha.1 | CNA record |
References
- https://github.com/go-git/go-billy/security/advisories/GHSA-m3xc-h892-ggx6x-refsource-confirm
- https://github.com/go-git/go-billy/releases/tag/v5.9.0x-refsource-misc
- https://github.com/go-git/go-billy/releases/tag/v6.0.0-alpha.1x-refsource-misc
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.