CVE-2025-58056: Netty vulnerable to request smuggling due to incorrect parsing of chunk extensions

CVE-2025-58056 · Severity: info · Published 2025-09-04

Netty vulnerable to request smuggling due to incorrect parsing of chunk extensions

Technologies: io.netty:netty-codec-http (Maven). Vendors: Maven.

Quick answers

Is CVE-2025-58056 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2025-58056 being exploited in the wild.
How severe is CVE-2025-58056?
Informational severity, published 4 September 2025.
Which products and versions are affected?
io.netty:netty-codec-http (Maven) ECOSYSTEM:introduced=0,fixed=4.1.125.Final.
Is there a fix for CVE-2025-58056?
Yes. io.netty:netty-codec-http (Maven): upgrade to 4.1.125.Final or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2025-58056?
Check whether you run io.netty:netty-codec-http (Maven) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • io.netty:netty-codec-http (Maven): upgrade to 4.1.125.Final or later
    # set io.netty:netty-codec-http to 4.1.125.Final in your pom.xml or build.gradle

Affected products

  • io.netty:netty-codec-http (Maven) ECOSYSTEM:introduced=0,fixed=4.1.125.Final

Identifiers

  • CVE-2025-58056
  • GHSA-fghv-69vj-qj49

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