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CVE-2026-33870 Netty: HTTP Request Smuggling via Chunked Extension Quoted-String Parsing

🗓️ 27 Mar 2026 19:54:15Reported by GitHub_MType 
cvelist
 cvelist🔗 www.cve.org👁 25 Views

CVE-2026-33870: Netty enables request smuggling via quoted-string parsing in chunked extensions; fixed in later releases.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: IBM Watson Discovery Cartridge affected by vulnerability in netty-codec-http-4.1.129.Final.jar
28 Apr 202622:37
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerability in Netty affects IBM watsonx Assistant Cartridge and IBM watsonx Orchestrate with watsonx Assistant Cartridge.
22 Jun 202613:17
–ibm
IBM Security Bulletins		Security Bulletin: IBM Enterprise Build of Quarkus is affected by multiple vulnerabilities
15 Apr 202615:10
–ibm
IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities affect IBM Decision Optimization for Cloud Pak for Data.
5 Jun 202610:12
–ibm
IBM Security Bulletins		Security Bulletin: IBM App Connect for Manufacturing is vulnerable to multiple vulnerabilities due to Netty and jackson-core (CVE-2026-33870, WS-2026-003)
11 May 202607:46
–ibm
IBM Security Bulletins		Security Bulletin: IBM Operational Decision Manager for May 2026 - Multiple CVEs addressed
9 Jul 202607:47
–ibm
IBM Security Bulletins		Security Bulletin: IBM Event Processing is affected by Multiple vulnerabilities
12 Jun 202607:30
–ibm
IBM Security Bulletins		Security Bulletin: DataStage on Cloud Pak for Data has several vulnerabilities due to open source software
22 Jun 202614:26
–ibm
IBM Security Bulletins		Security Bulletin: IBM® Db2® federated server is affected by multiple vulnerabilities in Netty open source libraries.
23 Jun 202619:50
–ibm
IBM Security Bulletins		Security Bulletin: There is a vulnerability in netty-codec-http-4.1.130.Final.jar used by IBM Maximo Manage application in IBM Maximo Application Suite (CVE-2026-33870)
29 May 202609:04
–ibm
Rows per page
[
  {
    "vendor": "netty",
    "product": "netty",
    "versions": [
      {
        "version": "< 4.1.132.Final",
        "status": "affected"
      },
      {
        "version": ">= 4.2.0.Alpha1, < 4.2.10.Final",
        "status": "affected"
      }
    ]
  }
]

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27 Mar 2026 19:54Current
CVSS 3.17.5
EPSS0.0064
CWE-444
Netty vulnerabilityRequest smugglingChunked extensionsQuoted string parsing
25