CVE-2026-12112

Summary

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.

Affected Software

Weaknesses

• CWE-287: Improper Authentication

Workarounds

Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

foreman-mcp-server: MCP Server: Active Session Hijacking via Insecure Session State Reuse

Additional References

• https://access.redhat.com/security/cve/CVE-2026-12112
• https://bugzilla.redhat.com/show_bug.cgi?id=2488031
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12112.json
• https://access.redhat.com/errata/RHSA-2026:28438

References

• https://access.redhat.com/errata/RHSA-2026:28438
• https://access.redhat.com/security/cve/CVE-2026-12112
• https://bugzilla.redhat.com/show_bug.cgi?id=2488031

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