ChainnettyMaven:io.netty:netty-codec-http
netty: incomplete fixes (2021–2026)
10 CVEs over 3 generations, 9 Mar 2021 to 13 May 2026.
Family tree
Left to right by publication date.Oldest first. Select a CVE to open it.- CVE-2021-212959 Mar 2021 First in the chain
- CVE-2021-2140930 Mar 2021 related to CVE-2021-21295
- CVE-2021-437979 Dec 2021 related to CVE-2021-21295
- CVE-2022-055211 Apr 2022 incomplete fix for CVE-2021-21409
- CVE-2022-4191513 Dec 2022 related to CVE-2021-43797
- CVE-2025-580563 Sep 2025 related to CVE-2021-21295related to CVE-2021-43797
- CVE-2025-5941915 Oct 2025 No direct link to an earlier CVE
- CVE-2025-6773516 Dec 2025 related to CVE-2021-21295next fix after CVE-2025-58056
- CVE-2026-4257813 May 2026 related to CVE-2025-67735
- CVE-2026-4258613 May 2026 related to CVE-2025-59419related to CVE-2025-67735
Exploited in the wild (CISA KEV) Not in KEV Priority score (0 to 100) High confidence Medium Low Link confidenceHow strong the evidence is that two CVEs are related. High: stated in the CVE text or linked in an advisory, or the same code was patched one release apart. Medium: the same code, or a version step plus a similar description. Low: similar description only.
CVEs in this family
Table view of the tree| CVE | Published | Title | Linked from | Priority |
|---|---|---|---|---|
| CVE-2021-21295 | 9 Mar 2021 | Possible request smuggling in HTTP/2 due missing validation · fixed in 4.1.60.Final | First in chain | 23.6 |
| CVE-2021-21409 | 30 Mar 2021 | Possible request smuggling in HTTP/2 due missing validation of content-length · fixed in 4.1.61.Final | CVE-2021-21295 · related · High | 22.6 |
| CVE-2021-43797 | 9 Dec 2021 | HTTP fails to validate against control chars in header names which may lead to HTTP request smuggling · fixed in 4.1.71.Final | CVE-2021-21295 · related · Medium | 21.9 |
| CVE-2022-0552 | 11 Apr 2022 | A flaw was found in the original fix for the netty-codec-http CVE-2021-21409, where the OpenShift Logging… | CVE-2021-21409 · incomplete fix · High | 13.5 |
| CVE-2022-41915 | 13 Dec 2022 | Netty project is an event-driven asynchronous network application framework · fixed in 4.1.86.Final | CVE-2021-43797 · related · Medium | 16.8 |
| CVE-2025-58056 | 3 Sep 2025 | Netty is vulnerable to request smuggling due to incorrect parsing of chunk extensions · fixed in 4.2.5.Final | CVE-2021-21295 · related · Medium | 12.7 |
| CVE-2025-59419 | 15 Oct 2025 | Netty netty-codec-smtp SMTP Command Injection Vulnerability Allowing Email Forgery | First in chain | 18.9 |
| CVE-2025-67735 | 16 Dec 2025 | Netty has a CRLF Injection vulnerability in io.netty.handler.codec.http.HttpRequestEncoder · fixed in 4.2.8.Final | CVE-2021-21295 · related · Medium | 9.6 |
| CVE-2026-42578 | 13 May 2026 | Netty: HTTP Header Injection via HttpProxyHandler Disabled Validation | CVE-2025-67735 · related · High | 15.0 |
| CVE-2026-42586 | 13 May 2026 | Netty: CRLF Injection in Netty Redis Codec Encoder | CVE-2025-59419 · related · High | 7.2 |