{"id":"CVE-2026-34505","aliases":["GHSA-5m9r-p9g7-679c"],"url":"https://o3.security/vulnerability/CVE-2026-34505","summary":"OpenClaw < 2026.3.12 - Webhook Rate Limiting Bypass via Pre-Authentication Secret Validation","details":"### Summary\n\nThe Zalo webhook handler applied request rate limiting only after webhook authentication succeeded. Requests with an invalid secret returned `401` but did not count against the rate limiter, allowing repeated secret guesses without triggering `429`.\n\n### Impact\n\nThis made brute-force guessing materially easier for weak but policy-compliant webhook secrets. Once the secret was guessed, an attacker could submit forged Zalo webhook traffic.\n\n### Affected versions\n\n`openclaw` `<= 2026.3.11`\n\n### Patch\n\nFixed in `openclaw` `2026.3.12`. Rate limiting now applies before successful authentication is required, closing the pre-auth brute-force gap. Users should update to `2026.3.12` or later and prefer strong webhook secrets.","published":"2026-03-31T11:17:20.769Z","modified":"2026-10-28T02:30:52.587169594Z","cvss":null,"epss":{"score":0.00272,"percentile":0.19023,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"openclaw","fixedVersion":"2026.3.12"}],"fix":{"url":"https://github.com/openclaw/openclaw/pull/44173","label":"openclaw/openclaw#44173"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34505.json"},{"type":"ADVISORY","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-5m9r-p9g7-679c"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34505"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/openclaw-webhook-rate-limiting-bypass-via-pre-authentication-secret-validation"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/pull/44173"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/commit/f96ba87f033a14183fa0ede912df3a592eef55ff"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/releases/tag/v2026.3.12"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-28T02:30:52.587169594Z"}}