Medium 5.3Published Oct 13, 2026

CVE-2026-85733FrankenPHP: Docker images serve phpinfo() as the default index.php, leaking environment variables

Updated under an hour ago (2026-10-19 09:10 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for php frankenphp

Exploited in the last 30 days

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: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness (CWE): CWE-200
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Oct 13, 2026
First seen by InfoSec Signals: Oct 13, 2026

Affected products

Affected products

php frankenphp php:frankenphp (from the name)	before 1.12.5	CNA record

References

https://github.com/php/frankenphp/security/advisories/GHSA-cj57-c655-p798x-refsource-confirm
https://github.com/php/frankenphp/pull/2524x-refsource-misc
https://github.com/php/frankenphp/commit/17940ff2ee188a1e48aabd10c095df72b42539e0x-refsource-misc
https://github.com/php/frankenphp/releases/tag/caddy/v1.12.5x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.