What’s Vulnerable › Vulnerabilities

CVE-2025-27400: Magento vulnerable to stored XSS in theme config fields

• Severity: low (CVSS 2.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-28 · updated 2026-06-17
• Weakness: CWE-79

Description

Magento Long Term Support (LTS) is an unofficial, community-driven project provides an alternative to the Magento Community Edition e-commerce platform with a high level of backward compatibility. Versions prior to 20.12.3 and 20.13.0 contain a vulnerability that allows script execution in the admin panel which could lead to cross-site scripting against authenticated admin users. The attack requires an admin user with configuration access, so in practicality it is not very likely to be useful given that a user with this level of access is probably already a full admin. Versions 20.12.3 and 20.13.0 contain a patch for the issue.

Affected products

• OpenMage magento-lts: before 20.12.3

References

• https://github.com/OpenMage/magento-lts/commit/d307e5bf75729a2347dde0952fe9fd9fcd9c6aea
• https://github.com/OpenMage/magento-lts/releases/tag/v20.12.3
• https://github.com/OpenMage/magento-lts/releases/tag/v20.13.0
• https://github.com/OpenMage/magento-lts/security/advisories/GHSA-5pxh-89cx-4668

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