RHSA-2026:95653CriticalCVSS 9.9

Red Hat Security Advisory: Satellite 6 Client Update

Published
November 5, 2026
Last Modified
November 10, 2026

🔗 CVE IDs covered (1)

CVE-2026-115731 →

📋 Description

CVE-2026-115731 — puppetserver: openvox-agent: openvox-server: puppetserver: authenticated remote code execution via report event deserialization

🎯 Affected products15

  • Satellite Client 6 for RHEL 10
  • Satellite Client 6 for RHEL 7
  • Satellite Client 6 for RHEL 8
  • Satellite Client 6 for RHEL 9
  • openvox-agent-0:8.32.0-1.el10sat.aarch64 as a component of Satellite Client 6 for RHEL 10
  • openvox-agent-0:8.32.0-1.el10sat.src as a component of Satellite Client 6 for RHEL 10
  • openvox-agent-0:8.32.0-1.el10sat.x86_64 as a component of Satellite Client 6 for RHEL 10
  • openvox-agent-0:8.32.0-1.el7sat.src as a component of Satellite Client 6 for RHEL 7
  • openvox-agent-0:8.32.0-1.el7sat.x86_64 as a component of Satellite Client 6 for RHEL 7
  • openvox-agent-0:8.32.0-1.el8sat.aarch64 as a component of Satellite Client 6 for RHEL 8
  • openvox-agent-0:8.32.0-1.el8sat.src as a component of Satellite Client 6 for RHEL 8
  • openvox-agent-0:8.32.0-1.el8sat.x86_64 as a component of Satellite Client 6 for RHEL 8
  • openvox-agent-0:8.32.0-1.el9sat.aarch64 as a component of Satellite Client 6 for RHEL 9
  • openvox-agent-0:8.32.0-1.el9sat.src as a component of Satellite Client 6 for RHEL 9
  • openvox-agent-0:8.32.0-1.el9sat.x86_64 as a component of Satellite Client 6 for RHEL 9

✅ Remediation

Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 Workaround: Until patched, avoid autosigning certificate requests without strong verification so untrusted clients cannot obtain a CA-signed agent certificate. --- CME Mitigation Guidance (2026-11-04) --- Disclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to independently evaluate and test these temporary mitigations within their own infrastructure. The highest-value action is to enforce safe deserialization allowlists for report event types in FromDataConverter to prevent dynamic class_eval execution: upgrade to openvox-server 9.2.0 and 8.18.0, Puppet Core agent 9.1.3 and 8.22.2 (or the fixed Openvox Server/Puppetserver builds), which restricts deserialization of report events to safe expected types to block untrusted __ptype instantiation and dynamic evaluation, closing crafted JSON report containing malicious serialized rich-data event types submitted via HTTP PUT. Until patched, this is a concern on Puppet Server and OpenVox Server instances processing agent reports, so avoid autosigning certificate requests without strong verification and restrict network access to the PUT /puppet/v3/report endpoint. As a compensating measure, enforce strict allowlist validation over report payload schemas and event structures before deserialization, deploy EDR to detect anomalous child processes and post-exploitation activity spawned by the puppetserver service user, configure auditd to log unauthorized system calls and command executions initiated by the puppetserver daemon, and use Falco or eBPF runtime security to detect unexpected shell invocations or sensitive credential reads by puppetserver. These controls limit blast radius and contain exploitation, but they do not fix the underlying untrusted deserialization defect — apply the upstream patch to fully remediate. Highest-impact CME: CME-1302 Deserialization Allowlist (Safe Loading) (high)

🔗 References (3)