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

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Summary

CVECVE-2026-44740
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-01 17:17:08 UTC
Updated2026-06-01 18:53:33 UTC
DescriptionBilly 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.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem Types: CWE-674 | CWE-835 | CWE-674 CWE-674: Uncontrolled Recursion | CWE-835 CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Go-git Go-billy affected < 5.9.0 Not specified
CNA Go-git Go-billy affected < 6.0.0-alpha.1 Not specified

References

ReferenceSourceLinkTags
github.com/go-git/go-billy/security/advisories/GHSA-m3xc-h892-ggx6 [email protected] github.com
github.com/go-git/go-billy/releases/tag/v6.0.0-alpha.1 [email protected] github.com
github.com/go-git/go-billy/releases/tag/v5.9.0 [email protected] github.com
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