This page tracks the Ubuntu fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-73051 →

UBUNTU-CVE-2026-73051

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-Lengt...

Original description

The description as published by the source.

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: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Ubuntu:26.10 rust-actix-http

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Ubuntu:26.04:LTS rust-actix-http

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

References

report ubuntu.com
report cve.org
report github.com
report vulncheck.com