{"id":"CVE-2026-42437","aliases":["GHSA-vw3h-q6xq-jjm5"],"url":"https://o3.security/vulnerability/CVE-2026-42437","summary":"OpenClaw 2026.4.9 < 2026.4.10 - Denial of Service via Oversized WebSocket Frames in Voice-call Realtime Path","details":"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.","published":"2026-05-05T11:24:55.977Z","modified":"2026-08-12T03:51:40.951752563Z","cvss":null,"epss":{"score":0.00417,"percentile":0.34595,"asOf":"2026-08-12"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"openclaw","fixedVersion":"2026.4.10"}],"fix":{"url":"https://github.com/openclaw/openclaw/commit/afadb7dae6738819ad9c7d2597ace0516957d20e","label":"openclaw/openclaw@afadb7d"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42437.json"},{"type":"ADVISORY","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-vw3h-q6xq-jjm5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42437"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-oversized-websocket-frames-in-voice-call-realtime-path"},{"type":"FIX","url":"https://github.com/openclaw/openclaw/commit/afadb7dae6738819ad9c7d2597ace0516957d20e"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:40.951752563Z"}}