{"id":"CVE-2026-118689","state":"PUBLISHED","title":"OvenMediaEngine through 0.21.0 OVT Relay DoS via Oversized payload_length","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.","publishedAt":"2026-10-28T21:11:17.232Z","updatedAt":"2026-10-28T21:11:17.232Z","severity":{"score":8.7,"label":"High","version":"4.0","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","source":"VulnCheck"},"assigner":"VulnCheck","products":["OvenMediaLabs OvenMediaEngine"],"affected":[{"vendor":"OvenMediaLabs","product":"OvenMediaEngine","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.21.0","versionType":"semver"}]}],"references":["https://github.com/OvenMediaLabs/OvenMediaEngine/issues/2330","https://github.com/OvenMediaLabs/OvenMediaEngine","https://github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetizer/ovt_packet.cpp#L48-L129","https://github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetizer/ovt_depacketizer.cpp#L32-L53","https://github.com/OvenMediaLabs/OvenMediaEngine/commit/ce316146d668a934217f25c777289ca256aa6786","https://www.vulncheck.com/advisories/ovenmediaengine-through-0.21.0-ovt-relay-dos-via-oversized-payload-length"],"weaknesses":["CWE-770"],"ingestedAt":"2026-10-29T20:10:52.580Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/118xxx/CVE-2026-118689.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-118689","state":"PUBLISHED","datePublished":"2026-10-28T21:11:17.232Z","dateUpdated":"2026-10-28T21:11:17.232Z","assignerShortName":"VulnCheck","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateReserved":"2026-10-28T17:31:29.498Z"},"containers":{"cna":{"title":"OvenMediaEngine through 0.21.0 OVT Relay DoS via Oversized payload_length","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"OvenMediaLabs","product":"OvenMediaEngine","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"0.21.0","versionType":"semver"}]}],"references":[{"url":"https://github.com/OvenMediaLabs/OvenMediaEngine/issues/2330","tags":["issue-tracking"],"name":"GitHub Issue #2330"},{"url":"https://github.com/OvenMediaLabs/OvenMediaEngine","tags":["product"]},{"url":"https://github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetizer/ovt_packet.cpp#L48-L129","tags":["technical-description"]},{"url":"https://github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetizer/ovt_depacketizer.cpp#L32-L53","tags":["technical-description"]},{"url":"https://github.com/OvenMediaLabs/OvenMediaEngine/commit/ce316146d668a934217f25c777289ca256aa6786","tags":["patch"]},{"url":"https://www.vulncheck.com/advisories/ovenmediaengine-through-0.21.0-ovt-relay-dos-via-oversized-payload-length","name":"VulnCheck Advisory: OvenMediaEngine through 0.21.0 OVT Relay DoS via Oversized payload_length","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","vectorString":"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","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":8.7,"baseSeverity":"HIGH"}},{"format":"CVSS","cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","lang":"en","description":"Allocation of Resources Without Limits or Throttling","type":"CWE"}]}],"providerMetadata":{"shortName":"VulnCheck","orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","dateUpdated":"2026-10-28T21:11:17.232Z"},"datePublic":"2026-09-14T00:00:00.000Z","credits":[{"lang":"en","value":"NoorahSmith","type":"finder"}],"x_generator":{"engine":"vulncheck-endgame"}}}}}