CVE-2026-12112
Received Received - Intake
Session Hijacking in Foreman MCP Server

Publication date: 2026-06-23

Last updated on: 2026-06-24

Assigner: Red Hat, Inc.

Description
A flaw was found in the foreman-mcp-server. A session management vulnerability in the MCP Server allows unauthenticated attackers to hijack active administrative sessions due to an improper cache of authenticated client connections, by trusting a non-secret session ID without re-validating authentication tokens and by logging all newly created session IDs to standard logs. This issue can result in privilege escalation and infrastructure-wide code execution.
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Meta Information
Published
2026-06-23
Last Modified
2026-06-24
Generated
2026-06-24
AI Q&A
2026-06-24
EPSS Evaluated
N/A
NVD
CVE-2026-12112
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
redhat foreman_mcp_server *
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-287 When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
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Executive Summary

This vulnerability exists in the foreman-mcp-server and involves session management. Specifically, the MCP Server improperly caches authenticated client connections and trusts a non-secret session ID without re-validating authentication tokens. Additionally, it logs all newly created session IDs to standard logs. This flaw allows unauthenticated attackers to hijack active administrative sessions.

Compliance Impact

The vulnerability in foreman-mcp-server allows unauthenticated attackers to hijack active administrative sessions, leading to privilege escalation and potential infrastructure-wide code execution.

Such unauthorized access and privilege escalation could result in unauthorized disclosure, modification, or destruction of sensitive data, which may impact compliance with standards like GDPR and HIPAA that require strict access controls and protection of sensitive information.

However, specific impacts on compliance are not detailed in the provided information.

Impact Analysis

The vulnerability can lead to privilege escalation and infrastructure-wide code execution. This means an attacker could gain administrative access without authentication and potentially execute malicious code across the entire infrastructure managed by the foreman-mcp-server.

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