CVE WatchSep 18, 2026

CVE-2026-93568

A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/2 or HTTP/3 Extended CONNECT

CVSS

7.5

High

EPSS

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KEV

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Exploit Today

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0-100

Published: Sep 18, 2026 · Last modified: Sep 18, 2026 · CWE-20

EPSS · 30d

Not enough EPSS history yet.

Technical description

A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/2 or HTTP/3 Extended CONNECT requests. Netty's HTTP-object conversion path incorrectly processes these requests as regular HTTP/1.1 CONNECT requests, leading to a loss of critical protocol and path information. This misinterpretation can allow attackers to bypass security policies, such as routing or authorization logic, in applications that rely on Netty for HTTP/2 or HTTP/3 communication, resulting in integrity loss.

Official references

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