{"affected":[{"defaultStatus":"unaffected","product":"OvenMediaEngine","source":"CNA: VulnCheck","vendor":"OvenMediaLabs","versions":[{"lessThanOrEqual":"0.21.0","status":"affected","version":"0","versionType":"semver"}]}],"cveId":"CVE-2026-118689","cwes":["CWE-770"],"description":"OvenMediaEngine through 0.21.0 contains a denial of service vulnerability in OvtPacket::LoadHeader() that allows unauthenticated attackers to stall connections by sending payload_length values above 32750. Attackers can send crafted OVT packets to the OVT listener to hold connections open indefinitely and accumulate buffered memory, disrupting origin-to-edge stream relay.","epss":{"date":"2026-11-02","percentile":0.43451,"score":0.00509},"exploits":[{"kind":"exploit","source":"ADP: CISA-ADP","url":"https://github.com/OvenMediaLabs/OvenMediaEngine/issues/2330"}],"kev":null,"metrics":[{"score":8.7,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":7.5,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}],"modifiedAt":1793713172884,"publishedAt":1793221877232,"references":[{"source":"CNA: VulnCheck","tags":["issue-tracking"],"url":"https://github.com/OvenMediaLabs/OvenMediaEngine/issues/2330"},{"source":"CNA: VulnCheck","tags":["product"],"url":"https://github.com/OvenMediaLabs/OvenMediaEngine"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetizer/ovt_packet.cpp#L48-L129"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetizer/ovt_depacketizer.cpp#L32-L53"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/OvenMediaLabs/OvenMediaEngine/commit/ce316146d668a934217f25c777289ca256aa6786"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/ovenmediaengine-through-0.21.0-ovt-relay-dos-via-oversized-payload-length"},{"source":"ADP: CISA-ADP","tags":["exploit"],"url":"https://github.com/OvenMediaLabs/OvenMediaEngine/issues/2330"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/OvenMediaLabs/OvenMediaEngine/commit/ce316146d668a934217f25c777289ca256aa6786"}],"revision":"fc3eeb48e2acd03a8142e8e459c4f63ccf98316b743f3ed3448ebc3c87c2f7c3","sources":[{"modifiedAt":1793713172884,"name":"CNA: VulnCheck","retrievedAt":1793714960782,"url":"https://www.cve.org/CVERecord?id=CVE-2026-118689"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793714962792,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-118689"}],"ssvc":{"assessedAt":1793713151721,"automatable":"yes","exploitation":"poc","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"OvenMediaEngine through 0.21.0 OVT Relay DoS via Oversized payload_length","updatedAt":1793714962792}