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Vulnerability · Published Jun 23, 2026 · Assigned by redhat

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

High 7.8

In plain English

A high-severity improper authentication in Red Hat Satellite 6.18 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.2%top 87.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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 (as reported)

VendorProductVersions
Red Hat Red Hat Satellite 6.18 see references
Red Hat Red Hat Satellite 6.19 see references

Weakness: CWE-287 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References