CVE-2026-33870
Netty: HTTP Request Smuggling via Chunked Extension Quoted-String Parsing
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
9th
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.
| CWE | CWE-444 |
| Vendor | netty |
| Product | netty |
| Published | Mar 27, 2026 |
| Last Updated | Mar 31, 2026 |
Stay Ahead of the Next One
Get instant alerts for netty netty
Be the first to know when new high vulnerabilities affecting netty netty are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Affected Versions
netty / netty
< 4.1.132.Final >= 4.2.0.Alpha1, < 4.2.10.Final