CVE-2026-23493 Pimcore ENV Variables and Cookie Informations are exposed in http_error_log

High 8.6 Published 15 Jan 2026 Updated 15 Jan 2026

Attackers with backend access can recover sensitive data like database passwords and session cookies from the http_error_log file.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2026-23493?

CVE-2026-23493 is a high-severity vulnerability in Pimcore Pimcore, published on 15 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Pimcore is an Open Source Data & Experience Management Platform. Prior to 12.3.1 and 11.5.14, the http_error_log file stores the $_COOKIE and $_SERVER variables, which means sensitive information such as database passwords, cookie session data, and other details can be accessed or recovered through the Pimcore backend. This vulnerability is fixed in 12.3.1 and 11.5.14.

Weakness: CWE-532

Which versions are affected by CVE-2026-23493?

4 open source packages ship an affected version, including pimcore/pimcore. It affects 1 product.

Package	Affected	Fixed in
`pimcore/pimcore` Packagist	All versions	`11.5.14`
`pimcore/pimcore` Packagist	All versions	`11.5.14`
`pimcore/pimcore` Packagist	From `12.0.0-RC1`	`12.3.1`
`pimcore/pimcore` Packagist	From `12.0.0-RC1`	`12.3.1`

Products include Pimcore Pimcore.

How do I fix CVE-2026-23493?

Upgrade pimcore/pimcore to a fixed version for your release line: 11.5.14 or 12.3.1.

Is CVE-2026-23493 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-23493 exists.

All Pimcore Pimcore vulnerabilities

Sources

Also known as GHSA-q433-j342-rp9h.