Advisory severityHigh7.8Red Hat Linux

High [CVE-2026-12112] Active Session Hijacking via Insecure Session State Reuse

This high-severity Red Hat Linux advisory covers CVE-2026-12112 affecting Red Hat Satellite 6.18, Red Hat Satellite 6.19.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2026-12112 Source published Jun 23, 2026Source updated Jun 23, 2026

VulniPulse record published Jul 6, 2026Record updated Jul 13, 2026

CVE-2026-12112

Affected products & platforms

Red Hat LinuxUnclassified

Open source advisory

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Summary

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. Due to this reason, this flaw has been rated with an important severity.

Red Hat severity: Important — CVSS 7.8 (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H). Weakness: CWE-287.

Affected Red Hat products: Red Hat Satellite 6.18; Red Hat Satellite 6.19. Red Hat fixing advisory: RHSA-2026:28405, RHSA-2026:28438.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 21 days ago·verify at source

Fixed versions

satellite/foreman-mcp-server-rhel9:1782228427
satellite/foreman-mcp-server-rhel9:1782228692
RHSA-2026:28405
RHSA-2026:28438

Official advisory · high-confidence parse· fetched 21 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.

Official advisory · high-confidence parse· fetched 21 days ago·verify at source

Discussion(0)

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