---
title: "CVE-2026-44973\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2026-44973?format=md
keywords: index, follow
---

# CVE-2026-44973

Publication date 28 May 2026

Last updated 6 June 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**8.1 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2026-44973?format=md#impact-score)

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## 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.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| golang-github-go-git-go-billy | 26.04 LTS resolute | Needs evaluation |
| 25.10 questing | Ignored end of life, was needs-triage |
| 24.04 LTS noble | Needs evaluation |
| 22.04 LTS jammy | Needs evaluation |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

8.1 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | Low |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | High |
  | Integrity impact | High |
  | Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 8.1 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-44973)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-44973)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-44973)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-44973)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-44973>
* <https://github.com/go-git/go-billy/security/advisories/GHSA-qw64-3x98-g7q2>