CVE-2026-118689

HIGH 7.5

OvenMediaEngine through 0.21.0 OVT Relay DoS via Oversized payload_length

CVSS Score

7.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-770
Vendor	ovenmedialabs
Product	ovenmediaengine
Published	Oct 28, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Affected Versions

OvenMediaLabs / OvenMediaEngine

0 ≤ 0.21.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/OvenMediaLabs/OvenMediaEngine/issues/2330 github.com: https://github.com/OvenMediaLabs/OvenMediaEngine github.com: https://github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetizer/ovt_packet.cpp#L48-L129 github.com: https://github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetizer/ovt_depacketizer.cpp#L32-L53 github.com: https://github.com/OvenMediaLabs/OvenMediaEngine/commit/ce316146d668a934217f25c777289ca256aa6786 vulncheck.com: https://www.vulncheck.com/advisories/ovenmediaengine-through-0.21.0-ovt-relay-dos-via-oversized-payload-length

Credits

NoorahSmith