CVE-2026-85733: medium-severity vulnerability in php frankenphp
FrankenPHP: Docker images serve phpinfo() as the default index.php, leaking environment variables
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.2%
FrankenPHP is a modern application server for PHP. Prior to 1.12.5, the official FrankenPHP Debian and Alpine Docker images include a default /app/public/index.php that executes phpinfo(). A derived image that does not overwrite this placeholder serves the diagnostics page in production and can disclose environment variables used for secrets, PHP configuration directives, loaded extensions, software versions, and system paths. Images built using the documented pattern with their own /app/public/index.php are not affected, and already derived images must be rebuilt or supplied with an application index to remove the exposed placeholder. This issue is fixed in version 1.12.5.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
php · frankenphpRelated CVEs — php frankenphp
In the same product, most dangerous first.
CVE-2026-45062HIGHFrankenPHP: Unsafe Unicode Handling in CGI Path Splitting Allows Execution of Non-PHP FilesEPSS 0.7%CVE-2026-24895HIGHFrankenPHP affected by Path Confusion via Unicode casing in CGI path splitting allows execution of arbitrary filesEPSS 0.7%CVE-2026-24894HIGHFrankenPHP leaks session data between requests in worker modeEPSS 0.5%CVE-2026-82416HIGHFrankenPHP: Cross-request PHP session ID leak in worker mode when the session extension is a shared moduleEPSS 0.3%