CVE-2026-44973
go-billy has path traversal vulnerabilities
Description
Billy is an interface filesystem abstraction for Go. Prior to 5.9.0, multiple path traversal issues exist across different components of go-billy. Insufficient path sanitization and boundary enforcement may allow crafted paths (e.g., using ..) to escape intended base directories. While go-billy was not originally designed to provide a strong security boundary, some of these issues were inconsistent across some of the built-in implementations. This results in scenarios where applications relying on go-billy for some level of isolation may inadvertently expose access to unintended filesystem locations. This vulnerability is fixed in 5.9.0.
How to fix CVE-2026-44973
To remediate CVE-2026-44973, upgrade the affected package to a fixed version below.
- —no fix listed
- —no fix listed
- —upgrade to 5.9.0 or later
- —upgrade to 6.0.0-alpha.1 or later
Is CVE-2026-44973 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (4)
- from 0
- from 0
- from 0, < 5.9.0
- from 0, < 6.0.0-alpha.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |