CVE-2026-23493
Pimcore ENV Variables and Cookie Informations are exposed in http_error_log
Description
### Summary 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. ### Details It’s better to remove both lines, as this information makes little sense in this context anyway. https://github.com/pimcore/pimcore/blob/12.x/bundles/SeoBundle/src/EventListener/ResponseExceptionListener.php#L92 https://github.com/pimcore/pimcore/blob/12.x/bundles/SeoBundle/src/EventListener/ResponseExceptionListener.php#L93 ### PoC In the Pimcore backend, navigate to "Search Engine Optimization" and click on "HTTP Errors." Double-click on an entry to view its details. Here, you may find sensitive data exposed. ### Impact Pimcore backend users can access sensitive environment variables, potentially exposing critical information.
How to fix CVE-2026-23493
To remediate CVE-2026-23493, upgrade the affected package to a fixed version below.
- —upgrade to 12.3.1 or later
Is CVE-2026-23493 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 12.0.0-RC1, < 12.3.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L |