CVE-2026-33580: Openclaw

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

OpenClaw before 2026.3.28 contains a missing rate limiting vulnerability in the Nextcloud Talk webhook authentication that allows attackers to brute-force weak shared secrets. Attackers who can reach the webhook endpoint can exploit this to forge inbound webhook events by repeatedly attempting authentication without throttling.

Affected products

• Openclaw Openclaw: before 2026.3.28 (fixed in 2026.3.28)

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