CVE-2026-25523: Magento's X-Original-Url header can expose admin url

February 2, 2026 (updated February 3, 2026)

The admin url can be discovered without prior knowledge of its location by exploiting the X-Original-Url header on some configurations.

References

github.com/OpenMage/magento-lts
github.com/OpenMage/magento-lts/security/advisories/GHSA-jg68-vhv3-9r8f
github.com/advisories/GHSA-jg68-vhv3-9r8f
hackerone.com/bugs?subject=openmage&report_id=3416312
nvd.nist.gov/vuln/detail/CVE-2026-25523

Code Behaviors & Features

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