{"id":"CVE-2026-33580","aliases":["GHSA-9528-x887-j2fp"],"url":"https://o3.security/vulnerability/CVE-2026-33580","summary":"OpenClaw < 2026.3.28 - Brute Force Attack via Missing Rate Limiting on Webhook Shared Secret Authentication","details":"## Summary\n\nNextcloud Talk webhook signature failures were not throttled even though the integration relies on an operator-configured shared secret that may be weak.\n\n## Impact\n\nAn attacker who could reach the webhook endpoint could brute-force weak secrets online and then forge inbound webhook events.\n\n## Affected Component\n\n`extensions/nextcloud-talk/src/monitor.ts`\n\n## Fixed Versions\n\n- Affected: `<= 2026.3.24`\n- Patched: `>= 2026.3.28`\n- Latest stable `2026.3.28` contains the fix.\n\n## Fix\n\nFixed by commit `e403decb6e` (`nextcloud-talk: throttle repeated webhook auth failures`).\n\nOpenClaw thanks @AntAISecurityLab for reporting.","published":"2026-03-31T14:10:33.057Z","modified":"2026-08-12T03:51:08.221668189Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"openclaw","fixedVersion":"2026.3.28"}],"fix":{"url":"https://github.com/openclaw/openclaw/commit/e403decb6e20091b5402780a7ccd2085f98aa3cd","label":"openclaw/openclaw@e403dec"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33580.json"},{"type":"ADVISORY","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-9528-x887-j2fp"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33580"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/openclaw-brute-force-attack-via-missing-rate-limiting-on-webhook-shared-secret-authentication"},{"type":"FIX","url":"https://github.com/openclaw/openclaw/commit/e403decb6e20091b5402780a7ccd2085f98aa3cd"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/releases/tag/v2026.3.28"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:08.221668189Z"}}