Resource exhaustion in Ovenmedialabs Ovenmediaengine
CVE-2026-118689
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.
Published .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/OvenMediaLabs/OvenMediaEngine/issues/2330 (issue-tracking)
- github.com/OvenMediaLabs/OvenMediaEngine (product)
- github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetize… (technical-description)
- github.com/OvenMediaLabs/OvenMediaEngine/blob/v0.21.0/src/modules/ovt_packetize… (technical-description)
- github.com/OvenMediaLabs/OvenMediaEngine/commit/ce316146d668a934217f25c777289ca… (patch)
- www.vulncheck.com/advisories/ovenmediaengine-through-0.21.0-ovt-relay-dos-via-o… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-118689?
- CVE-2026-118689 is a high-severity vulnerability in Ovenmedialabs Ovenmediaengine, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-10-28.
- How severe is CVE-2026-118689?
- High severity. CVSS v3 base score is 7.5 out of 10.