{"cve":"CVE-2026-33580","nvd":{"published":"2026-03-31T15:16:15.170","modified":"2026-07-24T21:10:00.143","status":"Analyzed","description":"OpenClaw before 2026.3.28 contains a missing rate limiting vulnerability in the Nextcloud Talk webhook authentication that allows attackers to brute-force weak shared secrets. Attackers who can reach the webhook endpoint can exploit this to forge inbound webhook events by repeatedly attempting authentication without throttling.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","score":6.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5},"cwes":["CWE-307"],"references":["https://github.com/openclaw/openclaw/commit/e403decb6e20091b5402780a7ccd2085f98aa3cd","https://github.com/openclaw/openclaw/security/advisories/GHSA-9528-x887-j2fp","https://www.vulncheck.com/advisories/openclaw-brute-force-attack-via-missing-rate-limiting-on-webhook-shared-secret-authentication"],"products":["openclaw:openclaw"],"source":"nvd","synced_at":"2026-10-19T22:28:18.033120106+00:00"},"epss":{"cve":"CVE-2026-33580","score":0.00371,"percentile":0.31046,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-9528-x887-j2fp","url":"https://osv.dev/vulnerability/GHSA-9528-x887-j2fp","summary":"OpenClaw's Nextcloud Talk webhook missing rate limiting on shared secret authentication","modified":"2026-04-06T23:12:30.461473Z","packages":[{"ecosystem":"npm","name":"openclaw","purl":"pkg:npm/openclaw","ranges":["<2026.3.28"],"fixed":["2026.3.28"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}