CVE-2026-12112

HIGH

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

Title source: cna
STIX 2.1

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.

References (4)

Core 4
Core References
Vendor Advisory vendor-advisory x_refsource_redhat
RHSA-2026:28438
https://access.redhat.com/errata/RHSA-2026:28438
Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-12112
Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat
RHBZ#2488031
https://bugzilla.redhat.com/show_bug.cgi?id=2488031

Scores

CVSS v3 7.8
EPSS 0.0015
EPSS Percentile 4.9%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-287
Status published
Products (4)
Red Hat/Red Hat Satellite 6
Red Hat/Red Hat Satellite 6.19 1782228692
redhat/satellite 6.19
theforeman/foreman
Published Jun 23, 2026
Tracked Since Jun 24, 2026