CVE-2026-12112
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.22%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.22% probability · 12th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-287
- Affected
- redhat/satellite · theforeman/foreman
- Source
- secalert@redhat.com
References
- https://access.redhat.com/errata/RHSA-2026:28405
- https://access.redhat.com/errata/RHSA-2026:28438Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2026-12112Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2488031Third Party Advisory
- https://access.redhat.com/errata/RHSA-2026:28405
- https://access.redhat.com/errata/RHSA-2026:28438Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2026-12112Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2488031Third Party Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12112.jsonThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.