CVE-2026-118689
OvenMediaEngine through 0.21.0 OVT Relay DoS via Oversized payload_length
HIGH 8.7EPSS 0.5%
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
- OvenMediaLabs · OvenMediaEngine
- CVSS v4.0 VULNCHECK
- 8.7 HIGH
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v3.1 VULNCHECK
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS
- 0.51% chance of exploitation in the next 30 days, 44th percentile
- Published
- 2026-10-28
Proof-of-concept exploits (1)
- https://www.vulncheck.com/advisories/ovenmediaengine-through-0.21.0-ovt-relay-dos-via-ove…find archive
CVE references
- OvenMediaLabs/OvenMediaEngineREFERENCE
- OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetizer/ovt_depacketizer.cp…REFERENCE
- OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetizer/ovt_packet.cpp#L48-…REFERENCE
- OvenMediaLabs/OvenMediaEngine/commit/ce316146d668a934217f25c777289ca256aa6786REFERENCE
- OvenMediaLabs/OvenMediaEngine/issues/2330REFERENCE