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HTTP Request Smuggling The advisory has been revoked - it doesn't affect any version of package logstash-9.1  (opens in a new tab)

Threat Intelligence

EPSS
0.71% (53rd percentile)

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  • Snyk IDSNYK-WOLFILATEST-LOGSTASH91-15401589
  • published5 Mar 2026
  • disclosed3 Sept 2025
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Introduced: 3 Sep 2025

CVE-2025-58056  (opens in a new tab)
CWE-444  (opens in a new tab)

Amendment

The Wolfi security team deemed this advisory irrelevant for Wolfi:latest.

NVD Description

Note: Versions mentioned in the description apply only to the upstream logstash-9.1 package and not the logstash-9.1 package as distributed by Wolfi.

Netty is an asynchronous event-driven network application framework for development of maintainable high performance protocol servers and clients. In versions 4.1.124.Final, and 4.2.0.Alpha3 through 4.2.4.Final, Netty incorrectly accepts standalone newline characters (LF) as a chunk-size line terminator, regardless of a preceding carriage return (CR), instead of requiring CRLF per HTTP/1.1 standards. When combined with reverse proxies that parse LF differently (treating it as part of the chunk extension), attackers can craft requests that the proxy sees as one request but Netty processes as two, enabling request smuggling attacks. This is fixed in versions 4.1.125.Final and 4.2.5.Final.