| Name | CVE-2026-93579 |
| Description | A flaw was found in Netty's HTTP/2 stack. This vulnerability allows a remote attacker to inject prohibited characters, such as NUL, Line Feed, and Carriage Return, into HTTP/2 header field values due to insufficient validation. When these values cross an HTTP/2 to HTTP/1.1 translation boundary, they can be exploited for request smuggling, header injection, or response splitting. This could lead to unauthorized access, data manipulation, or other security bypasses. |
| Source | CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 1148396 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| netty (PTS) | bookworm, bookworm (security) | 1:4.1.48-7+deb12u2 | vulnerable |
| trixie (security), trixie | 1:4.1.48-10+deb13u1 | vulnerable | |
| forky, sid | 1:4.1.48-16 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| netty | source | (unstable) | (unfixed) | 1148396 |
https://bugzilla.redhat.com/show_bug.cgi?id=2536970
https://github.com/netty/netty/security/advisories/GHSA-8whp-c7w8-2m72