High7.1Red Hat Linux

High [CVE-2026-25536] @modelcontextprotocol/sdk: @modelcontextprotocol/sdk cross-client data leak

This high-severity Red Hat Linux advisory covers CVE-2026-25536 affecting Red Hat Ansible Automation Platform 2.6.

CVE-2026-25536 Published Feb 4, 2026

CVE-2026-25536

Affected products & platforms

Red Hat LinuxUnclassified

Open vendor advisory

Android app · Google Play

Monitor future Red Hat Linux CVEs from your phone.

Choose a whole vendor or a precise platform, then receive matching security advisories by phone notification, email, or both. Coverage follows 32 official vendor sources and 160+ reviewed platform categories.

Matching phone alertsOptional email delivery

Get CVE alerts See app features

Summary

@modelcontextprotocol/sdk: @modelcontextprotocol/sdk cross-client data leak. Red Hat rates this important (CVSS 7.1).

Weakness: CWE-367. Affected package(s): ansible-automation-platform-tech-preview/mcp-server-rhel9:1772196222.

Resolved in Red Hat advisory RHSA-2026:3960 — update the affected packages (`sudo dnf update`).

Affected product named by the advisory: Red Hat Ansible Automation Platform 2.6.

Affected versions

ansible-automation-platform-tech-preview/mcp-server-rhel9:1772196222

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

Fixed versions

RHSA-2026:3960

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-2026:3960 (`sudo dnf update` / `yum update`).

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

Discussion(0)

No comments yet. Share field notes, upgrade gotchas, or questions — verify against the vendor advisory before acting on community advice.