CVE-2026-12112

Administrative session hijacking via cached connection reuse

Published Jun 23, 2026 · Updated Jun 23, 2026

Improper authentication in Red Hat Satellite 6.18 and Red Hat Satellite 6.19 allows local users to hijack active administrative MCP sessions. AuthMiddleware stores an authenticated ForemanApi client in user_map under a non-secret mcp-session-id, then reuses it without validating the new foreman_token. Read access to INFO logs supplies a live session ID; hijacked requests inherit the victim's RBAC rights, enabling arbitrary Satellite API actions and, when remote execution is enabled, infrastructure-wide code execution.

CVSS severity7.8
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Improper authentication in Red Hat Satellite 6.18 and Red Hat Satellite 6.19 allows local users to hijack active administrative MCP sessions. AuthMiddleware stores an authenticated ForemanApi client in user_map under a non-secret mcp-session-id, then reuses it without validating the new foreman_token. Read access to INFO logs supplies a live session ID; hijacked requests inherit the victim's RBAC rights, enabling arbitrary Satellite API actions and, when remote execution is enabled, infrastructure-wide code execution.

The record

CVE
CVE-2026-12112
Published
Jun 23, 2026
Updated
Jun 23, 2026
Vendor
389 Directory Server
Product
Red Hat Satellite
Classifications
CWE-287, T1552.001, T1550.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 23, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 23, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

389 Directory Server · Red Hat SatelliteAffected versions are unavailable in this record.

Published CVSS scores

7.8Red Hat, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1552.001Unsecured Credentials: Credentials In Files
T1550.004Use Alternate Authentication Material: Web Session Cookie

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo