CVE-2026-42580

MEDIUM

6.5

Description

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's chunk size parser silently overflows int, enabling request smuggling attacks. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

CVE Details

CVSS v3.1 Score6.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published5/13/2026

Last Modified5/13/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-190CWE-444

References

https://github.com/netty/netty/security/advisories/GHSA-m4cv-j2px-7723(security-advisories@github.com)

IOC Correlations

No correlations recorded

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