Detections
Analytics
CVE-2026-33870
high
Description
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, Netty incorrectly parses quoted strings in HTTP/1.1 chunked transfer encoding extension values, enabling request smuggling attacks. Versions 4.1.132.Final and 4.2.10.Final fix the issue.
References
https://www.rfc-editor.org/rfc/rfc9110
https://w4ke.info/2025/10/29/funky-chunks-2.html
https://w4ke.info/2025/06/18/funky-chunks.html
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33870.json
https://github.com/netty/netty/security/advisories/GHSA-pwqr-wmgm-9rr8
https://bugzilla.redhat.com/show_bug.cgi?id=2452453
https://access.redhat.com/security/cve/CVE-2026-33870
https://access.redhat.com/errata/RHSA-2026:8509
https://access.redhat.com/errata/RHSA-2026:8159
https://access.redhat.com/errata/RHSA-2026:7380
https://access.redhat.com/errata/RHSA-2026:7109
https://access.redhat.com/errata/RHSA-2026:34608
https://access.redhat.com/errata/RHSA-2026:22619
https://access.redhat.com/errata/RHSA-2026:18059
https://access.redhat.com/errata/RHSA-2026:18055
https://access.redhat.com/errata/RHSA-2026:18054
https://access.redhat.com/errata/RHSA-2026:17789
https://access.redhat.com/errata/RHSA-2026:17668
https://access.redhat.com/errata/RHSA-2026:14276
https://access.redhat.com/errata/RHSA-2026:14272
https://access.redhat.com/errata/RHSA-2026:13571