High severity · published Jun 23, 2026
CVE-2026-12112
Foreman-mcp-server: mcp server: active session hijacking via insecure session state reuse
7.8
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 12% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Satellite 6.18 · Red Hat
All versions, or not specified · source: vendor, CISA
RH
Red Hat Satellite 6.19 · Red Hat
All versions, or not specified · source: vendor, CISA
FO
Foreman · Theforeman
All versions, or not specified · source: NVD
SA
Satellite · Redhat
6.19 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-12112
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-12112
access.redhat.com
https://access.redhat.com/errata/RHSA-2026:28405
Third Party Advisory
https://access.redhat.com/errata/RHSA-2026:28438
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-12112
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2488031
Third Party Advisory
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12112.json
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