CVE-2026-34508

OpenClaw before 2026.3.12 applies rate limiting only after webhook authentication succeeds, allowing attackers to bypass rate limits and brute-force webhook secrets without triggering 429 responses. Attackers can repeatedly guess invalid secrets to discover valid credentials and subsequently submit forged Zalo webhook traffic.

More information : https://github.com/openclaw/openclaw/security/advisories/GHSA-5m9r-p9g7-679c