CVE-2026-118689
OvenMediaEngine through 0.21.0 OVT Relay DoS via Oversized payload_length
- State
- Published
- Severity
- 8.7 High
- Published
- Oct 28, 2026
- Updated
- Oct 28, 2026
- Reserved
- Oct 28, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 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 | VulnCheck |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | VulnCheck |
Weaknesses
- CWE-770 Allocation of Resources Without Limits or Throttling
Affected Products
| Product | Versions |
|---|---|
OvenMediaEngineOvenMediaLabs |
|
References
- GitHub Issue #2330issue-tracking
- https://github.com/OvenMediaLabs/OvenMediaEngineproduct
- https://github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetizer/ovt_packet.cpp#L48-L129technical-description
- https://github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetizer/ovt_depacketizer.cpp#L32-L53technical-description
- https://github.com/OvenMediaLabs/OvenMediaEngine/commit/ce316146d668a934217f25c777289ca256aa6786patch
- VulnCheck Advisory: OvenMediaEngine through 0.21.0 OVT Relay DoS via Oversized payload_lengththird-party-advisory
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