CVE-2026-118689

high

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.

References

https://www.vulncheck.com/advisories/ovenmediaengine-through-0.21.0-ovt-relay-dos-via-oversized-payload-length

https://github.com/OvenMediaLabs/OvenMediaEngine/issues/2330

https://github.com/OvenMediaLabs/OvenMediaEngine/commit/ce316146d668a934217f25c777289ca256aa6786

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

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-112490

Details

Source: Mitre, NVD

Published: 2026-10-28

Updated: 2026-10-29

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High

CVSS v4

Base Score: 8.7

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

Severity: High

EPSS

EPSS: 0.00509