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Advisories

FrankenPHP before 1.13.0 CGI Path-Split Boundary Bypass via splitPos

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Severity
medium
Date
Affecting

  • frankenphp >= 0, < 1.13.0

CWE
  • CWE-436 Interpretation Conflict
CVSS
6.9
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Credit
Reload3d
Description
FrankenPHP before 1.13.0 contains a path-split interpretation conflict in splitPos in cgi.go that allows unauthenticated attackers to execute protected PHP scripts by embedding .php inside a filename component. Attackers can request paths like /uploads/a.php.txt/b.php to execute uploads/a.php despite route-level or WAF deny rules and forge PATH_INFO, SCRIPT_NAME, and PHP_SELF values.

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