High8.8Red Hat Linux Exploited CISA KEV

High [CVE-2026-42271] Authenticated command execution via MCP stdio test endpoints

This high-severity Red Hat Linux advisory covers CVE-2026-42271 affecting Red Hat OpenShift AI 2.25, Red Hat OpenShift AI 3.3, Red Hat OpenShift AI 3.4.

CVE-2026-42271 Published May 8, 2026

CVE-2026-42271

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

Authenticated command execution via MCP stdio test endpoints. Red Hat rates this important (CVSS 8.8).

Weakness: CWE-78. Affected package(s): rhoai/odh-llama-stack-core-rhel9:1781826406, rhoai/odh-llama-stack-core-rhel9:1782310008, rhoai/odh-trustyai-garak-lls-provider-dsp-rhel9:1781622627.

Resolved in Red Hat advisory RHSA-2026:28960 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat OpenShift AI 2.25; Red Hat OpenShift AI 3.3; Red Hat OpenShift AI 3.4.

CISA Known Exploited Vulnerability

Listed:: Jun 8, 2026 · federal remediation due Jun 22, 2026
Required action:: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Ransomware use:: Unknown

KEV is a prioritization signal from CISA — remediation detail still comes from the vendor advisory.

Affected versions

rhoai/odh-llama-stack-core-rhel9:1781826406
rhoai/odh-llama-stack-core-rhel9:1782310008
rhoai/odh-trustyai-garak-lls-provider-dsp-rhel9:1781622627

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

RHSA-2026:28960

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Update the affected package(s) to the fixed version shipped in RHSA-2026:28960 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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