---
title: "CVE-2026-41283\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-2026-41283?format=md
keywords: index, follow
---

# CVE-2026-41283

Publication date 4 June 2026

Last updated 18 June 2026

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**9.9 · Critical**

[Score breakdown](https://ubuntu.com/security/CVE-2026-41283?format=md#impact-score)

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## Description

OpenStack Mistral through 22.0.0 allows Arbitrary Remote Code Execution
when the API is exposed. There are endpoints that allow code execution,
which can lead to exfiltration of service credentials.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2026-41283?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| mistral | 26.04 LTS resolute | Fixed 22.0.0-0ubuntu1.1 |
| 25.10 questing | Fixed 21.0.0-0ubuntu1.1 |
| 24.04 LTS noble | Fixed 18.0.1-0ubuntu1.1 |
| 22.04 LTS jammy | Fixed 14.0.0-0ubuntu1.1 |
| 20.04 LTS focal | Vulnerable |
| 18.04 LTS bionic | Vulnerable |
| 16.04 LTS xenial | Vulnerable |

---

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

## Notes

---

### [federicoquattrin](https://launchpad.net/~federicoquattrin)

xenial, bionic and focal are vulnerable to the
broken access control issue described as impact #1
in LP#2147178, but not vulnerable to the RCE described
as impact #2 in LP#2147178. The vulnerable component
to the RCE was introduced in version 12.0.0.

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

9.9 · Critical

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 9.9 · Critical |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-41283)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-41283)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-41283)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-41283)

### Related Ubuntu Security Notices (USN)

+ [USN-8422-1](https://usn.ubuntu.com/USN-8422-1)
+ Mistral vulnerability
+ 11 June 2026

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-41283>
* <https://www.openwall.com/lists/oss-security/2026/06/03/14>