CVE-2026-41417
Last modified
CVE-2026-41417 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 0.31% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Netty | Netty | < 4.1.133 |
| Netty | Netty | >= 4.2.0, < 4.2.13 |
References
- https://github.com/netty/netty/security/advisories/GHSA-v8h7-rr48-vmmvExploit, Mitigation, Vendor Advisory
- https://github.com/netty/netty/security/advisories/GHSA-v8h7-rr48-vmmvExploit, Mitigation, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-41417?
How severe is CVE-2026-41417?
How do I fix CVE-2026-41417?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-41411Vim is an open source, command line text editor. Prior to 9.…6.6
- CVE-2026-41412alf.io is an open source ticket reservation system for confe…4.9
- CVE-2026-41413Istio is an open platform to connect, manage, and secure mic…7.7
- CVE-2026-41414Skim is a fuzzy finder designed to through files, lines, and…7.4
- CVE-2026-41415PJSIP is a free and open source multimedia communication lib…9.1
- CVE-2026-41416PJSIP is a free and open source multimedia communication lib…7.5
- CVE-2026-414184ga Boards is a boards system for realtime project managemen…5.3
- CVE-2026-414194ga Boards is a boards system for realtime project managemen…7.6
- CVE-2026-4142The Sentence To SEO (keywords, description and tags) plugin …4.4
- CVE-2026-41421SiYuan is an open-source personal knowledge management syste…8.8
- CVE-2026-41422Daptin is a GraphQL/JSON-API headless CMS. Prior to version …8.3
- CVE-2026-41423Angular is a development platform for building mobile and de…5.3
Are you affected by CVE-2026-41417?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST