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.
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History
Fri, 14 Aug 2026 11:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | actix-http before 3.12.1 HTTP Request Smuggling via CL.TE | |
| First Time appeared |
Actix
Actix actix-web |
|
| Weaknesses | CWE-444 | |
| CPEs | cpe:2.3:a:actix:actix-web:*:*:*:*:*:rust:*:* | |
| Vendors & Products |
Actix
Actix actix-web |
|
| References |
| |
| Metrics |
cvssV4_0
|
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MITRE
Status: PUBLISHED
Assigner: VulnCheck
Published:
Updated: 2026-08-14T11:35:45.780Z
Reserved: 2026-08-10T19:10:18.100Z
Link: CVE-2026-73051
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