========================================================================
CVE-2026-116130                                      CPAN Security Group
========================================================================

         CVE ID:  CVE-2026-116130

   Distribution:  HTTP-Parser-XS
       Versions:  before 0.18
       MetaCPAN:  https://metacpan.org/dist/HTTP-Parser-XS
       VCS Repo:  https://github.com/kazuho/p5-http-parser-xs

HTTP::Parser::XS versions before 0.18 for Perl truncate PATH_INFO at an
encoded NUL byte in parse_http_request

Description
-----------
HTTP::Parser::XS versions before 0.18 for Perl truncate PATH_INFO at an
encoded NUL byte in parse_http_request.

The XS parser URL-decodes the request path and measures the result with
strlen(), so PATH_INFO ends at the first byte decoded from %00. The
pure-Perl backend is not affected.

A remote attacker can send a path that a proxy or filter checks in full
while the application routes on a shorter one.

Problem types
-------------
- CWE-626 Null Byte Interaction Error (Poison Null Byte)

Solutions
---------
Upgrade to HTTP-Parser-XS 0.18 or later.

References
----------
https://github.com/kazuho/p5-http-parser-xs/commit/f388b9d7994722b01edd03d57de7d2fb819e1aae.patch
https://metacpan.org/release/KAZUHO/HTTP-Parser-XS-0.18/changes