{"id":"UBUNTU-CVE-2026-73051","details":"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.","modified":"2026-08-19T11:11:14Z","published":"2026-08-14T12:16:00Z","upstream":["CVE-2026-73051"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-73051"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-73051"},{"type":"REPORT","url":"https://github.com/actix/actix-web/security/advisories/GHSA-xhj4-vrgc-hr34"},{"type":"REPORT","url":"https://www.vulncheck.com/advisories/actix-http-before-http-request-smuggling-via-cl-te"}],"affected":[{"package":{"name":"rust-actix-http","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/rust-actix-http?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.9.0-3","3.11.2-1","3.11.2-2"],"ecosystem_specific":{"binaries":[{"binary_name":"librust-actix-http-dev","binary_version":"3.11.2-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73051.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}