High7.1Red Hat & Ubuntu Linux
@modelcontextprotocol/sdk: @modelcontextprotocol/sdk cross-client data leak
CVE-2026-25536 Published Feb 4, 2026
CVE-2026-25536
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
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 versions
- ansible-automation-platform-tech-preview/mcp-server-rhel9:1772196222
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Fixed versions
- RHSA-2026:3960
Official advisory · high-confidence parse· fetched 1 day 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 1 day ago·verify at source
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