CVE-2026-100557 OpenClaw CVE debrief

Who should care

Defenders responsible for OpenClaw deployments should assess exposure and prioritize updates to prevent exploitation. They should verify the affected versions of OpenClaw in their environment, restrict access to sensitive tools and credentials, and monitor for suspicious activity related to skill tool dispatch. Security teams and vulnerability management teams should also review the vulnerability and its potential impact on their systems.

Why it matters

CVE-2026-100557 is an authorization bypass vulnerability in OpenClaw versions before 2026.8.1 that allows non-owner senders to access owner-only tools and server credentials. Defenders should verify the affected versions, restrict access, and monitor for suspicious activity.

• Defenders need to verify the affected versions of OpenClaw in their environment.
• Unauthorized access to owner-only tools and server credentials is possible.
• Defenders should restrict access to sensitive tools and credentials.
• Monitoring for suspicious activity related to skill tool dispatch is necessary.

Technical summary

The vulnerability is located in the skill tool dispatch of OpenClaw versions before 2026.8.1 and allows non-owner senders to access owner-only tools and server credentials. This authorization bypass vulnerability can be exploited by non-owner senders who are authorized to invoke skill commands. The CVE record and NVD entry provide information about the vulnerability, but details about exploitation or affected systems are limited. Defenders should verify the affected versions of OpenClaw in their environment and apply necessary updates to prevent exploitation.

Defensive priority

Defenders should prioritize verifying the affected versions of OpenClaw in their environment and applying the necessary updates to prevent exploitation.

Recommended defensive actions

• Verify the version of OpenClaw in use and update to version 2026.8.1 or later if necessary.
• Review and restrict access to owner-only tools and server credentials.
• Monitor for any suspicious activity related to skill tool dispatch.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record and NVD entry provide information about the vulnerability, but details about exploitation or affected systems are limited. The vulnerability is located in the skill tool dispatch of OpenClaw versions before 2026.8.1. Non-owner senders authorized to invoke skill commands can access owner-only tools and server credentials reserved for owners. Defenders should verify the affected versions, restrict access, and monitor for suspicious activity. The information available does not specify the number of affected systems or any

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.