CVE-2026-12112
HIGHForeman-mcp-server: mcp server: active session hijacking via insecure session state reuse
Title source: cnaDescription
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