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Advisory record · GHSA-9hfw-w3f4-c4p8

OpenStack Mistral allows Arbitrary Remote Code Execution when the API is exposed

CVSS 9.9 CriticalCriticalEPSS 0.0073 · 54th percentile

Critical, because:

  • CVSS score 9.9: 9.0 or more.

How we decide what’s critical

Published by the GitHub Advisory Database at 4 Jun 2026, 06:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
mistralPyPI>=20.0.0, <20.1.1 || =21.0.0 || =22.0.020.1.1
Identifiers
GHSA-9hfw-w3f4-c4p8 · CVE-2026-41283 · PYSEC-2026-3486
Weakness (CWE)
CWE-749 · CWE-863
Tags
Published
4 Jun 2026
Updated
23 Jul 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Mistral versions 20.0.0 up to but not including 20.1.1 are affected. An attacker who can reach an exposed Mistral API can run arbitrary code on the server and exfiltrate service credentials. Upgrade mistral to 20.1.1, and do not expose the Mistral API to untrusted networks.

Written 5 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
9.9 Critical 3.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CNA (mitre)
  • CISA KEV Not listed.
  • EPSS 0.0073, the 54th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 14:41 UTC First seen by agentprime
  2. 31 Oct 2026, 14:41 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.