Medium severity6.5GHSA Advisory· Published May 13, 2026· Updated May 14, 2026

CVE-2026-42580

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.

Affected products

Netty/NettyGHSA
Range: <= 4.1.132.Final

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

github.com/advisories/GHSA-m4cv-j2px-7723ghsaADVISORY
github.com/netty/netty/security/advisories/GHSA-m4cv-j2px-7723nvd
nvd.nist.gov/vuln/detail/CVE-2026-42580ghsa

News mentions

No linked articles in our index yet.

cvss	0.423
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000