CVE-2026-40560

A flaw was found in Starman. Starman versions before 0.4018 for Perl incorrectly prioritize the "Content-Length" header over "Transfer-Encoding: chunked" when both are present in an HTTP request, violating RFC 7230 3.3.3. A remote attacker could exploit this improper header precedence to perform...

CVE-2026-40560: Inconsistent Interpretation of HTTP Requests

Starman versions before 0.4018 for Perl allows HTTP Request Smuggling via Improper Header Precedence. Starman incorrectly prioritizes "Content-Length" over "Transfer-Encoding: chunked" when both headers are present in an HTTP request. Per RFC 7230 3.3.3, Transfer-Encoding must take precedence. An...