VULNRABLE / Vulnerability / CVE-2026-75596

CVE-2026-75596

MEDIUM LOW io.netty:netty-handler GHSA

Exploit verdict: No active-exploit signal

CVSS Score

5.5

Severity

MEDIUM

EPSS

Source

GHSA

Summary

Netty: Fragmented ClientHello records trigger quadratic pre-handshake reassembly in default SNI parsing

What this means

CVE-2026-75596 is a medium-severity vulnerability affecting io.netty:netty-handler, rated CVSS 5.5. The EPSS model estimates a 0% probability of exploitation in the next 30 days. Published September 8, 2026.

View full advisory at GHSA →