CVE-2026-34505: Openclaw

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

OpenClaw before 2026.3.12 applies rate limiting only after successful webhook authentication, allowing attackers to bypass rate limits and brute-force webhook secrets. Attackers can submit repeated authentication requests with invalid secrets without triggering rate limit responses, enabling systematic secret guessing and subsequent forged webhook submission.

Affected products

• Openclaw Openclaw: before 2026.3.12 (fixed in 2026.3.12)

Published 2026-03-31. Last modified 2026-07-24.