Vulnerability DatabaseCVE-2026-118689
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CVE-2026-118689
Published:October 28, 2026
Updated:October 29, 2026
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.
Related Resources (7)
https://github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetizer/ovt_packet.cpp#L48-L129
https://github.com/OvenMediaLabs/OvenMediaEngine
https://nvd.nist.gov/vuln/detail/CVE-2026-118689
https://github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetizer/ovt_depacketizer.cpp#L32-L53
https://www.vulncheck.com/advisories/ovenmediaengine-through-0.21.0-ovt-relay-dos-via-oversized-payload-length
https://github.com/OvenMediaLabs/OvenMediaEngine/commit/ce316146d668a934217f25c777289ca256aa6786
https://github.com/OvenMediaLabs/OvenMediaEngine/issues/2330
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Allocation of Resources Without Limits or Throttling
CWE-770