Netty: Memory Exhaustion in SctpMessageCompletionHandler

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-59902
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-17 18:17:36 UTC
Updated2026-08-18 15:16:55 UTC
DescriptionNetty 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.006840000 probability, percentile 0.495740000 (date 2026-08-18)

Problem Types: CWE-400 | CWE-400 CWE-400: Uncontrolled Resource Consumption

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1CNADECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Netty Netty affected < 4.1.137.Final Not specified
CNA Netty Netty affected >= 4.2.0.Final, < 4.2.17.Final Not specified

References

ReferenceSourceLinkTags
github.com/netty/netty/commit/1b5abc6443b63726c72cdd285af2feb7ddbb8ff7 [email protected] github.com
github.com/netty/netty/security/advisories/GHSA-2qj4-mmr9-4v2f [email protected] github.com
github.com/netty/netty/releases/tag/netty-4.1.137.Final [email protected] github.com
github.com/netty/netty/pull/17217 [email protected] github.com
github.com/netty/netty/pull/17213 [email protected] github.com
github.com/netty/netty/releases/tag/netty-4.2.17.Final [email protected] github.com
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