medium5.3
CVE-2026-25523
Magento's X-Original-Url header can expose admin url
Impact
### Impact The admin url can be discovered without prior knowledge of it's location by exploiting the X-Original-Url header on some configurations. ### Patches The bug comes from the Zend library and is patche by unsetting the header in the bootstrap process. ### Workarounds Unset the `X-Original-Url` header in the web server configuration. ### References The activation of these headers is coming from the Zend_Controller module. It appears this has been known to some degree since 2016 - https://peterocallaghan.co.uk/2016/12/magento-poisoning-cache/ (dead link now..) ### Credit Anees Hyder ( @anees0xdev ) via HackerOne https://hackerone.com/anees0x_dev/hacktivity
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | openmage/magento-lts | < 20.16.1 | 20.16.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Openmage | Magento | through 20.16.0 |