CVE-2026-93566 Affecting netty package, versions *


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.47% (40th percentile)

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  • Snyk IDSNYK-ECHOLATEST-NETTY-19946211
  • published19 Sept 2026
  • disclosed18 Sept 2026

Introduced: 18 Sep 2026

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

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