Vulnerability 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.
Related Weaknesses (CWE)
References
- https://github.com/actix/actix-web/security/advisories/GHSA-xhj4-vrgc-hr34
- https://www.vulncheck.com/advisories/actix-http-before-http-request-smuggling-vi
FAQ
What is CVE-2026-73051?
CVE-2026-73051 is a documented vulnerability. 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. Unauthen...
How severe is CVE-2026-73051?
CVSS scoring is not yet available for CVE-2026-73051. Check NVD for updates.
Is there a patch for CVE-2026-73051?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.