CVE-2026-41405: Openclaw

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

OpenClaw before 2026.3.31 parses MS Teams webhook request bodies before performing JWT validation, allowing unauthenticated attackers to trigger resource exhaustion. Remote attackers can send malicious Teams webhook payloads to exhaust server resources by bypassing authentication checks.

Affected products

• Openclaw Openclaw: before 2026.3.31 (fixed in 2026.3.31)

Published 2026-04-28. Last modified 2026-06-17.