Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.129.Final and 4.2.8.Final, the `io.netty.handler.codec.http.HttpRequestEncoder` has a CRLF injection with the request URI when constructing a request. This leads to request smuggling when `HttpRequestEncoder` is used without proper sanitization of the URI. Any application / framework using `HttpRequestEncoder` can be subject to be abused to perform request smuggling using CRLF injection. Versions 4.1.129.Final and 4.2.8.Final fix the issue.
References
| Link | Resource |
|---|---|
| https://github.com/netty/netty/security/advisories/GHSA-84h7-rjj3-6jx4 | Exploit Vendor Advisory |
Configurations
Configuration 1 (hide)
|
History
02 Jan 2026, 18:50
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Netty netty
Netty |
|
| CPE | cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:* | |
| References | () https://github.com/netty/netty/security/advisories/GHSA-84h7-rjj3-6jx4 - Exploit, Vendor Advisory |
16 Dec 2025, 01:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-12-16 01:15
Updated : 2026-01-02 18:50
NVD link : CVE-2025-67735
Mitre link : CVE-2025-67735
CVE.ORG link : CVE-2025-67735
JSON object : View
Products Affected
netty
- netty
CWE
CWE-93
Improper Neutralization of CRLF Sequences ('CRLF Injection')