CVE-2026-100559 OpenClaw CVE debrief

Who should care

Defenders responsible for OpenClaw systems should assess exposure and prioritize updating to 2026.8.1 or later to prevent potential command injection attacks. This includes operators, platform administrators, vulnerability management teams, and security teams who need to review allowlist validation and exec commands for potential vulnerabilities and monitor system logs for suspicious activity.

Why it matters

Defenders should prioritize verifying OpenClaw versions and updating to 2026.8.1 or later to prevent potential command injection attacks. The vulnerability allows attackers to craft input with escaped newlines to bypass allowlist validation and execute additional commands without expected authorization prompts.

• Potential command injection attacks
• Bypass allowlist validation and execute additional commands
• Escalate privileges or execute unauthorized actions

Technical summary

OpenClaw versions before 2026.8.1 contain a command parser vulnerability where escaped newlines confuse exec allowlist parsing, allowing hidden commands to execute. Attackers can craft input with escaped newlines to bypass allowlist validation and execute additional commands without expected authorization prompts. This vulnerability affects OpenClaw systems and enables potential command injection attacks. Defenders should prioritize verifying OpenClaw versions and updating to 2026.8.1 or later to prevent potential command injection attacks.

Defensive priority

Defenders should prioritize verifying OpenClaw versions and updating to 2026.8.1 or later to prevent potential command injection attacks.

Recommended defensive actions

• Verify OpenClaw version and update to 2026.8.1 or later
• Review allowlist validation and exec commands for potential vulnerabilities
• Monitor system logs for suspicious activity
• 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 details on the vulnerability, but additional information on affected systems and potential exploitation is limited. The vulnerability allows attackers to craft input with escaped newlines to bypass allowlist validation and execute additional commands without expected authorization prompts. Defenders should verify OpenClaw versions and update to 2026.8.1 or later to prevent potential command injection attacks. The CVE Program record and NVD detail page offer source-provided CVE metadata and official

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.