CVE-2026-75596
1 advisory.
Maven/io.netty:netty-handler CVE-2026-75596: medium
Netty: Fragmented ClientHello records trigger quadratic pre-handshake reassembly in default SNI parsing
Action: Upgrade io.netty:netty-handler to 4.1.137.Final (4.1.x) or 4.2.17.Final (4.2.x) or later.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 4.2.0.Final | 4.2.17.Final | - |
| 0 | 4.1.137.Final | - |
Fixed versions
| 4.2.17.Final | 4.1.137.Final |
Sources
- osv: GHSA-fccg-mwvh-qqg4
- https://github.com/netty/netty/security/advisories/GHSA-fccg-mwvh-qqg4
- https://nvd.nist.gov/vuln/detail/CVE-2026-75596
- https://github.com/netty/netty/pull/17213
- https://github.com/netty/netty/pull/17217
- https://github.com/netty/netty/commit/1b5abc6443b63726c72cdd285af2feb7ddbb8ff7
- https://github.com/netty/netty/commit/9e0519239108a69b7e9bbc5e9182ee139a0d7961
- https://github.com/netty/netty
- https://github.com/netty/netty/releases/tag/netty-4.1.137.Final
- https://github.com/netty/netty/releases/tag/netty-4.2.17.Final
CVE-2026-75596 · published · modified · JSON