CVE-2026-44740

go-billy: Lack of depth and cycle detection in symlink resolution may lead to infinite loops and resource exhaustion

State: Published
Severity: 6.5 Medium
Published: Jun 1, 2026
Updated: Jun 1, 2026
Reserved: May 7, 2026

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

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	GitHub_M

Weaknesses

CWE-674 Uncontrolled Recursion
CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

Affected Products

Product	Versions
go-billygo-git	< 5.9.0Affected < 6.0.0-alpha.1Affected

References

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