Resource Exhaustion Affecting netty package, versions *
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published23 Jul 2026
- disclosed21 Jul 2026
Introduced: 21 Jul 2026
NewCVE-2026-56816 (opens in a new tab)How to fix?
There is no fixed version for Echo:latest netty.
NVD Description
Note: Versions mentioned in the description apply only to the upstream netty package and not the netty package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
Netty is a network application framework for development of protocol servers and clients. Prior to 4.2.16.Final, Netty's Http3FrameCodec buffers incoming data for HTTP/3 reserved frame types up to the wire-specified payload length without limits; decodeFrame trusts payLoadLength, allowing an attacker to open multiple QUIC streams and send reserved frames with very large payload lengths to cause memory exhaustion and denial of service. This issue is fixed in version 4.2.16.Final.