CVE-2026-73051

UNKNOWN 0.0

actix-http before 3.12.1 HTTP Request Smuggling via CL.TE

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-444
Vendor	actix
Product	actix-web
Published	Aug 14, 2026

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Affected Versions

actix / actix-web

0 < 3.12.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/actix/actix-web/security/advisories/GHSA-xhj4-vrgc-hr34 vulncheck.com: https://www.vulncheck.com/advisories/actix-http-before-http-request-smuggling-via-cl-te

Credits

🔍 mufeedvh