CVE-2026-93566 Affecting netty-codec-http package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.48% (40th percentile)

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  • Snyk IDSNYK-RHEL8-NETTYCODECHTTP-20087367
  • published24 Sept 2026
  • disclosed10 Sept 2026

Introduced: 10 Sep 2026

CVE-2026-93566  (opens in a new tab)
CWE-1035  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:8 netty-codec-http.

NVD Description

Note: Versions mentioned in the description apply only to the upstream netty-codec-http package and not the netty-codec-http package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

A flaw was found in Netty. A remote attacker could exploit this by sending a specially crafted HTTP request that includes control characters within the chunk-size line. This bypasses the intended strict validation, allowing the attacker to inject arbitrary HTTP requests. This vulnerability can lead to HTTP request smuggling, potentially resulting in information disclosure or other unauthorized actions.

CVSS Base Scores

version 3.1