What’s Vulnerable › Vulnerabilities

CVE-2026-12112: Foreman-mcp-server: mcp server: active session hijacking via insecure session state reuse

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-23 · updated 2026-10-25
• Weakness: CWE-287

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.

Affected products

• Red Hat Satellite 6: 6.19
• foreman: all versions

References

• https://access.redhat.com/errata/RHSA-2026:28405
• 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
• https://access.redhat.com/errata/RHSA-2026:28405
• 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
• https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12112.json

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