{"id":"GHSA-5m9r-p9g7-679c","summary":"OpenClaw: Zalo webhook rate limiting could be bypassed before 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` `\u003c= 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.","aliases":["CVE-2026-34505"],"modified":"2026-04-06T23:12:30.174960Z","published":"2026-03-13T20:55:38Z","database_specific":{"severity":"MODERATE","github_reviewed":true,"github_reviewed_at":"2026-03-13T20:55:38Z","nvd_published_at":null,"cwe_ids":["CWE-307"]},"references":[{"type":"WEB","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":"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"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/openclaw-webhook-rate-limiting-bypass-via-pre-authentication-secret-validation"}],"affected":[{"package":{"name":"openclaw","ecosystem":"npm","purl":"pkg:npm/openclaw"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.3.12"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 2026.3.11","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/03/GHSA-5m9r-p9g7-679c/GHSA-5m9r-p9g7-679c.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"}]}