CVE-2026-100596: OpenClaw authorization bypass in MCP configuration

CVE-2026-100596 · Severity: high · CVSS 8.8 · Published 2026-09-26

OpenClaw is a system that integrates with MCP (Model Context Protocol) servers for AI-powered chat functionality. An authorization flaw allows non-owner users to inject and persist malicious MCP server commands that execute with OpenClaw's system privileges. This could lead to a complete compromise of the host system, including data theft, system modification, and service disruption.

Technologies: Openclaw. Vendors: Openclaw.

Quick answers

Is CVE-2026-100596 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-100596 being exploited in the wild.
How severe is CVE-2026-100596?
High severity, with a CVSS score of 8.8, published 26 September 2026.
Which products and versions are affected?
Openclaw before 2026.7.1.
Is there a fix for CVE-2026-100596?
A patch was published on 2026-07-01: version 2026.7.1 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-100596 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2026-100596?
Check whether you run Openclaw at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

OpenClaw fails to properly authorize non-owner users executing /mcp set and /mcp unset commands, allowing them to persist arbitrary stdio MCP commands. An authenticated non-owner external-channel sender can inject attacker-selected MCP configuration that executes with the OpenClaw process user's privileges when the MCP configuration loads. This is a missing authorization check (CWE-862) combined with OS command injection (CWE-78) that affects confidentiality, integrity, and availability.

Affected products

  • OpenClaw OpenClaw before 2026.7.1

Timeline

  • 2026-09-26: disclosed
  • 2026-07-01: patched: version 2026.7.1 released

References

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