Magento-lts is a long-term support alternative to Magento Community Edition (CE). Prior to version 20.16.1, the admin url can be discovered without prior knowledge of it's location by exploiting the X-Original-Url header on some configurations. This issue has been patched in version 20.16.1.
PUBLISHED5.2CWE-200
Magento's X-Original-Url header can expose admin url
Problem type
Affected products
OpenMage
magento-lts
< 20.16.1 - AFFECTED
References
https://github.com/OpenMage/magento-lts/security/advisories/GHSA-jg68-vhv3-9r8f
https://github.com/OpenMage/magento-lts/security/advisories/GHSA-jg68-vhv3-9r8f
https://hackerone.com/bugs?subject=openmage&report_id=3416312
https://hackerone.com/bugs?subject=openmage&report_id=3416312
GitHub Security Advisories
GHSA-jg68-vhv3-9r8f
Magento's X-Original-Url header can expose admin url
https://github.com/advisories/GHSA-jg68-vhv3-9r8fImpact
The admin url can be discovered without prior knowledge of its location by exploiting the X-Original-Url header on some configurations.
Patches
The bug comes from the Zend library.
Workarounds
Unset the X-Original-Url header in the web server configuration.
Resources
https://hackerone.com/bugs?subject=openmage&report_id=3416312
Upon deeper investigation, it was initially not found, but then it was realized that the search excluded the vendor/ directory. This is coming from the Zend_Controller module. Here is another tip from 2016 - it is surprising that this was not somehow patched already!
https://peterocallaghan.co.uk/2016/12/magento-poisoning-cache/ (dead link now..)
Credit
Anees Hyder (anees0x_dev) on HackerOne https://hackerone.com/anees0x_dev/hacktivity?type=user
JSON source
https://cveawg.mitre.org/api/cve/CVE-2026-25523Click to expand
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"dateUpdated": "2026-02-04T21:40:35.514Z",
"dateReserved": "2026-02-02T18:21:42.487Z",
"datePublished": "2026-02-04T21:21:56.414Z",
"state": "PUBLISHED"
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},
"title": "Magento's X-Original-Url header can expose admin url",
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"value": "Magento-lts is a long-term support alternative to Magento Community Edition (CE). Prior to version 20.16.1, the admin url can be discovered without prior knowledge of it's location by exploiting the X-Original-Url header on some configurations. This issue has been patched in version 20.16.1."
}
],
"affected": [
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"privilegesRequired": "NONE",
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