CVE-2026-35646: Openclaw

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

OpenClaw before 2026.3.25 contains a pre-authentication rate-limit bypass vulnerability in webhook token validation that allows attackers to brute-force weak webhook secrets. The vulnerability exists because invalid webhook tokens are rejected without throttling repeated authentication attempts, enabling attackers to guess weak tokens through rapid successive requests.

Affected products

• Openclaw Openclaw: before 2026.3.25 (fixed in 2026.3.25)

Published 2026-04-09. Last modified 2026-06-17.