PT-2026-62422 · Netty · Netty
CVE-2026-56816
·
Published
2026-07-21
·
Updated
2026-08-07
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Name of the Vulnerable Software and Affected Versions
Netty versions prior to 4.2.16.Final
Description
Netty's
Http3FrameCodec buffers incoming data for HTTP/3 reserved frame types up to the wire-specified payload length without limits. The decodeFrame() function trusts the payLoadLength variable, which allows an attacker to open multiple QUIC streams and send reserved frames with excessively large payload lengths, leading to memory exhaustion and denial of service.Recommendations
Update to version 4.2.16.Final.
Exploit
Fix
DoS
Resource Exhaustion
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Weakness Enumeration
Related Identifiers
Affected Products
Netty