OpenStack Mistral API Policy Bypass Leading to Remote Code Execution
CVE-2026-41283 is a critical vulnerability in OpenStack Mistral affecting deployments through version 22.0.0. Several Mistral API endpoints fail to enforce required access policies, allowing any authenticated user to create public resources and upload arbitrary code. That code is then executed on Mistral executor workers. The flaw is fundamentally an authorization/policy-enforcement failure in administrative or privileged API operations, enabling a low-privileged authenticated tenant to reach code-execution paths that should be restricted. Affected versions include >=20.0.0 and <20.1.1, 21.0.0, and 22.0.0, particularly where the Mistral API is exposed.
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Impact, mitigation & remediation
What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
Impact
What an attacker gets, and what they’ve been doing with it.
Mitigation
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Remediation
Patch, then assume compromise.
Exploits
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Recent activity
11 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.