CVE-2026-59902 PUBLISHED

Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, io.netty.handler.codec.sctp.SctpMessageCompletionHandler limits incomplete messages and fragment counts but not maxBufferedBytes, allowing unauthenticated peers to exhaust memory with large SCTP fragments. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final.

• https://github.com/netty/netty/security/advisories/GHSA-2qj4-mmr9-4v2f
• 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/releases/tag/netty-4.1.137.Final
• https://github.com/netty/netty/releases/tag/netty-4.2.17.Final

• CWE-400: Uncontrolled Resource Consumption CWE