Netty allows request-line validation to be bypassed when a `DefaultHttpRequest` or `DefaultFullHttpRequest` is created first and its URI is later changed via `setUri()`. The constructors reject CRLF and whitespace characters that would break the start-line, but `setUri()` does not apply the same validation. `HttpRequestEncoder` and `RtspEncoder` then write the URI into the request line verbatim. If attacker-controlled input reaches `setUri()`, this enables CRLF injection and insertion of additional HTTP or RTSP requests, leading to HTTP request smuggling or desynchronization on the HTTP side and request injection on the RTSP side. This issue is fixed in versions 4.2.13.Final and 4.1.133.Final.
Advisories
| Source | ID | Title |
|---|---|---|
Github GHSA |
GHSA-v8h7-rr48-vmmv | Netty: Start-Line Injection in DefaultHttpRequest.setUri() Allows HTTP Request Smuggling and RTSP Request Injection |
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 06 May 2026 23:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Netty
Netty netty |
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| Vendors & Products |
Netty
Netty netty |
Wed, 06 May 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Netty allows request-line validation to be bypassed when a `DefaultHttpRequest` or `DefaultFullHttpRequest` is created first and its URI is later changed via `setUri()`. The constructors reject CRLF and whitespace characters that would break the start-line, but `setUri()` does not apply the same validation. `HttpRequestEncoder` and `RtspEncoder` then write the URI into the request line verbatim. If attacker-controlled input reaches `setUri()`, this enables CRLF injection and insertion of additional HTTP or RTSP requests, leading to HTTP request smuggling or desynchronization on the HTTP side and request injection on the RTSP side. This issue is fixed in versions 4.2.13.Final and 4.1.133.Final. | |
| Title | Netty vulnerable to HTTP request smuggling and RTSP request injection via DefaultHttpRequest.setUri() | |
| Weaknesses | CWE-444 CWE-93 |
|
| References |
| |
| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-05-06T20:52:47.206Z
Reserved: 2026-04-20T15:32:33.813Z
Link: CVE-2026-41417
No data.
Status : Received
Published: 2026-05-06T22:16:25.780
Modified: 2026-05-06T22:16:25.780
Link: CVE-2026-41417
No data.
OpenCVE Enrichment
Updated: 2026-05-06T23:00:15Z
Github GHSA