Description

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 attacker could exploit this to smuggle malicious HTTP requests via a front-end reverse proxy.

INFO

Published Date :

2026-04-28T23:46:37.780Z

Last Modified :

2026-04-29T19:06:02.932Z

Source :

CPANSec
AFFECTED PRODUCTS

The following products are affected by CVE-2026-40560 vulnerability.

Vendors Products
Miyagawa
  • Starman
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-40560.

URL Resource
http://www.openwall.com/lists/oss-security/2026/04/29/1 cve-icon
https://datatracker.ietf.org/doc/html/rfc7230#section-3.3.3 cve-icon cve-icon
https://github.com/miyagawa/Starman/commit/ced205f0805027e9d9c0731f8c40b104220604ed.patch cve-icon cve-icon
https://metacpan.org/release/MIYAGAWA/Starman-0.4018/changes cve-icon cve-icon
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