Answer in brief
CVE-2026-59902 records a High severity vulnerability in Netty: Memory Exhaustion in SctpMessageCompletionHandler. The current sources do not mark it as known exploited. The current feed maps netty/netty (generic), io.netty:netty-transport-sctp (maven), io.netty:netty-transport-sctp (maven). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps netty/netty (generic), io.netty:netty-transport-sctp (maven), io.netty:netty-transport-sctp (maven). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| netty/nettygeneric | < 4.1.137.Final || >= 4.2.0.Final, < 4.2.17.Final | Not reported |
| io.netty:netty-transport-sctpmaven | >=4.2.0.Final,<=4.2.16.Final | 4.2.17.Final |
| io.netty:netty-transport-sctpmaven | <=4.1.136.Final | 4.1.137.Final |
Published upstream
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-59902 records a High severity vulnerability in Netty: Memory Exhaustion in SctpMessageCompletionHandler. The current sources do not mark it as known exploited. The current feed maps netty/netty (generic), io.netty:netty-transport-sctp (maven), io.netty:netty-transport-sctp (maven). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps netty/netty (generic), io.netty:netty-transport-sctp (maven), io.netty:netty-transport-sctp (maven). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| netty/nettygeneric | < 4.1.137.Final || >= 4.2.0.Final, < 4.2.17.Final | Not reported |
| io.netty:netty-transport-sctpmaven | >=4.2.0.Final,<=4.2.16.Final | 4.2.17.Final |
| io.netty:netty-transport-sctpmaven | <=4.1.136.Final | 4.1.137.Final |
Published upstream
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 17, 2026
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.
Quoted source text, attributed separately from HOL analysis.