CVE Watch21 jul 2026

CVE-2026-56819

Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final through 4.2.15.Final and 4

CVSS

7.5

Alto

EPSS

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KEV

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Exploit Today

0-100

Publicado: 21 jul 2026 · Última mod.: 21 jul 2026 · CWE-400 · CWE-401

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Netty is a network application framework for development of protocol servers and clients. In versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, a remote unauthenticated peer can leak one direct `ByteBuf` per HTTP/2 `DATA` frame in applications that enable HTTP/2 content decompression via `DelegatingDecompressorFrameListener`. When a `DATA` frame is processed for a stream whose decompressor has already been closed, `Http2Decompressor.decompress(...)` calls `decompressor.writeInbound(data.retain())` and does not release the retained buffer on the error path, eventually exhausting direct memory and crashing the JVM. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.

Referencias oficiales

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