CVE-2026-73051

Name	CVE-2026-73051
Description	actix-http versions before 3.12.1 contain an HTTP request smuggling vulnerability in the HTTP/1.1 parser that accepts requests with both Content-Length and Transfer-Encoding: chunked headers. Unauthenticated remote attackers can exploit this through a front-end intermediary to desynchronize backend requests and smuggle malicious HTTP requests to the Actix service.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
rust-actix-http (PTS)	trixie	3.9.0-3	vulnerable
	forky, sid	3.13.1-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
rust-actix-http	source	(unstable)	3.13.1-1

[trixie] - rust-actix-http <no-dsa> (Minor issue)
https://github.com/actix/actix-web/security/advisories/GHSA-xhj4-vrgc-hr34