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.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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.
    (CVE-2026-41283)

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-8422-1 advisory.

    Eduardo Gonzalez Gutierrez and Arnaud Morin discovered that Mistral did not properly enforce access     policies on some API endpoints. An attacker could possibly execute arbitrary code on a Mistral worker and     possibly extract sensitive data including service credentials from it.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Debian 12 / 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6333 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6333-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     June 09, 2026                         https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : mistral     CVE ID         : CVE-2026-41283

    Eduardo Gonzalez Gutierrez and Arnaud Morin discovered that multiple     API endpoints of Mistral, the OpenStack Workflow, improperly enforced     access policies, which could result in information disclosure.

    For the oldstable distribution (bookworm), this problem has been fixed     in version 15.0.0-1+deb12u1.

    For the stable distribution (trixie), this problem has been fixed in     version 20.0.0-2+deb13u1.

    We recommend that you upgrade your mistral packages.

    For the detailed security status of mistral please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/mistral

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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.
    (CVE-2026-41283)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Severity
444725	SCA: security update for mistral (GHSA-9hfw-w3f4-c4p8)	Tenable Cloud Security	SCA Checks	critical
444725	SCA: security update for mistral (GHSA-9hfw-w3f4-c4p8)	Tenable Self-Hosted Container Security	SCA Checks	critical
320844	Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : Mistral vulnerability (USN-8422-1)	Nessus	Ubuntu Local Security Checks	critical
320217	Debian dsa-6333 : mistral-api - security update	Nessus	Debian Local Security Checks	critical
318547	Linux Distros Unpatched Vulnerability : CVE-2026-41283	Nessus	Misc.	critical

Detections

Analytics

CVE-2026-41283

critical

Tenable Plugins

critical

critical

critical

critical

critical