#VU105168 Stored cross-site scripting in magento-lts - CVE-2025-27400

Vulnerability identifier: #VU105168

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-27400

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
magento-lts
Web applications / Modules and components for CMS

Vendor: OPENMAGE

Description

The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in theme config fields. A remote privileged user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

magento-lts: 20.0.0 - 20.0.20, 20.1.0 - 20.12.2, 20.2.0, 20.3.0, 20.4.0, 20.5.0, 20.6.0, 20.7.0, 20.8.0, 20.9.0

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External links
https://github.com/OpenMage/magento-lts/security/advisories/GHSA-5pxh-89cx-4668

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.