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CVE-2026-59899

🗓️ 27 Jul 2026 15:33:26Reported by redhat.comType 
redhatcve
 redhatcve🔗 access.redhat.com👁 18 Views

Netty HTTP decoder flaw allows remote attackers to cause memory exhaustion and denial of service via highly compressed data.

Related
Refs
ReporterTitlePublishedViews
Family
ibm
IBM Security Bulletins		Security Bulletin: Vulnerabilities reported in netty-codec-4.1.135.Final.jar for APIM
4 Oct 202617:06
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM Watson Discovery Cartridge affected by vulnerability in netty-codec-http-4.1.135.Final.jar
15 Sep 202620:38
–ibm
ibm
IBM Security Bulletins		Security Bulletin: Vulnerability in Netty affects IBM watsonx Assistant Cartridge and IBM watsonx Orchestrate with watsonx Assistant Cartridge.
2 Nov 202614:09
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM SPSS Analytic Server is affected by multiple vulnerabilities in Netty
19 Aug 202618:05
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM DevOps Deploy / IBM UrbanCode Deploy (UCD) is susceptible to multiple Netty vulnerabilities (CVE-2026-59899, CVE-2026-59921)
3 Sep 202617:48
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM App Connect for Manufacturing is vulnerable to multiple vulnerabilities due to Netty and open62541
7 Aug 202613:04
–ibm
ibm
IBM Security Bulletins		Security Bulletin: Vulnerabilities in netty-codec, spring-webflux, spring-data, Spring MVC, Immutable and ACE might affect IBM Storage Defender Copy Data Management
30 Sep 202617:08
–ibm
ibm
IBM Security Bulletins		Security Bulletin: IBM Watson Speech Services Cartridge is vulnerable to multiple issues in Netty
22 Oct 202619:46
–ibm
attackerkb
attackerkb		CVE-2026-59899
29 Jul 202618:00
–attackerkb
cgr
Chainguard		CVE-2026-59899 vulnerabilities
24 Jul 202608:23
–cgr
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06 Aug 2026 20:33Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.5
CVSS 46.9
EPSS0.00609
SSVC
CWE-409
Nettydecoder flawmemory exhaustiondenial of service
18