CVE-2026-41343: Openclaw

Medium severity, CVSS 5.3. EPSS: 0.8% chance of exploitation in the next 30 days.

OpenClaw before 2026.3.31 lacks a shared pre-auth concurrency budget on the public LINE webhook path, allowing attackers to cause transient availability loss. Remote attackers can flood the webhook endpoint with concurrent requests before signature verification to exhaust resources and degrade service availability.

Affected products

• Openclaw Openclaw: before 2026.3.31 (fixed in 2026.3.31)

Published 2026-04-23. Last modified 2026-06-17.