{"cve":"CVE-2026-42437","nvd":{"published":"2026-05-05T12:16:18.190","modified":"2026-06-17T10:47:50.473","status":"Deferred","description":"OpenClaw versions 2026.4.9 before 2026.4.10 contain a denial of service vulnerability in the voice-call realtime WebSocket path that accepts oversized frames without proper validation. Remote attackers can send oversized WebSocket frames to cause service unavailability for deployments exposing the voice-call realtime WebSocket path.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.2},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-770"],"references":["https://github.com/openclaw/openclaw/commit/afadb7dae6738819ad9c7d2597ace0516957d20e","https://github.com/openclaw/openclaw/security/advisories/GHSA-vw3h-q6xq-jjm5","https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-oversized-websocket-frames-in-voice-call-realtime-path"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:33:55.586217763+00:00"},"epss":{"cve":"CVE-2026-42437","score":0.00412,"percentile":0.35507,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-vw3h-q6xq-jjm5","url":"https://osv.dev/vulnerability/GHSA-vw3h-q6xq-jjm5","summary":"OpenClaw: Voice-call realtime WebSocket accepted oversized frames","modified":"2026-06-08T23:30:14.364614357Z","packages":[{"ecosystem":"npm","name":"openclaw","purl":"pkg:npm/openclaw","ranges":[">=2026.4.9 <2026.4.10"],"fixed":["2026.4.10"]}]}],"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."]}