{"id":"CVE-2026-34505","aliases":["EUVD-2026-17389","GHSA-5m9r-p9g7-679c"],"status":"published","title":"OpenClaw \u003c 2026.3.12 - Webhook Rate Limiting Bypass via Pre-Authentication Secret Validation","description":"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.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00277,"percentile":0.20342,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-307"],"published":"2026-03-13T20:55:38Z","modified":"2026-10-28T02:30:52Z","fixes":[{"ecosystem":"npm","package":"openclaw","fixed_in":["2026.3.12"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"openclaw","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"2026.3.11"},{"fixed":"2026.3.12"}]}]},{"source":"osv","ecosystem":"npm","package":"openclaw","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.3.12"}]}]}],"products":[{"vendor":"openclaw","product":"openclaw"}],"references":[{"url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-5m9r-p9g7-679c","tags":["vendor-advisory","Vendor Advisory","advisory","web"]},{"url":"https://www.vulncheck.com/advisories/openclaw-webhook-rate-limiting-bypass-via-pre-authentication-secret-validation","tags":["third-party-advisory","Third Party Advisory","advisory","web"]},{"url":"https://github.com/openclaw/openclaw/pull/44173","tags":["web"]},{"url":"https://github.com/openclaw/openclaw/commit/f96ba87f033a14183fa0ede912df3a592eef55ff","tags":["web"]},{"url":"https://github.com/openclaw/openclaw/releases/tag/v2026.3.12","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34505","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-5m9r-p9g7-679c"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34505.json","tags":["advisory"]},{"url":"https://github.com/openclaw/openclaw","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-34505","title":"OpenClaw \u003c 2026.3.12 - Webhook Rate Limiting Bypass via Pre-Authentication Secret Validation","description":"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.","status":"published","published":"2026-03-31T11:17:20.769Z","modified":"2026-06-23T16:15:42.504Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:20:14.665567Z"}],"euvd":[{"id":"EUVD-2026-17389","description":"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.","status":"published","published":"2026-03-31T11:17:20Z","modified":"2026-06-23T16:15:42Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T18:20:32.273921Z"}],"ghsa":[{"id":"GHSA-5m9r-p9g7-679c","title":"OpenClaw: Zalo webhook rate limiting could be bypassed before secret validation","description":"### 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.","status":"published","published":"2026-03-13T20:55:38Z","modified":"2026-04-06T22:50:15Z","cvss":[{"version":"4.0","score":6.9,"vector":"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","level":"medium"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:39:48.966685Z"}],"nvd":[{"id":"CVE-2026-34505","description":"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.","status":"published","published":"2026-03-31T12:16:30.237Z","modified":"2026-07-24T22:10:00.14Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:12:12.261218Z"}],"osv":[{"id":"CVE-2026-34505","title":"OpenClaw \u003c 2026.3.12 - Webhook Rate Limiting Bypass via Pre-Authentication Secret Validation","description":"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.","status":"published","published":"2026-03-31T11:17:20.769Z","modified":"2026-10-28T02:30:52.587169594Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T15:45:02.247031Z"},{"id":"GHSA-5m9r-p9g7-679c","title":"OpenClaw: Zalo webhook rate limiting could be bypassed before secret validation","description":"### 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.","status":"published","published":"2026-03-13T20:55:38Z","modified":"2026-04-06T23:12:30.17496Z","cvss":[{"version":"4.0","score":6.9,"vector":"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","level":"medium"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T15:46:38.553953Z"}]}}