CVE-2026-128051
Received Received - Intake

Stored XSS in OpenMage Magento-LTS Product Templates

Publication date: 2026-11-13

Last updated on: 2026-11-13

Assigner: VulnCheck

Description
OpenMage magento-lts before 20.18.2 and 21.0.0-beta1 before 21.0.0-beta3 contains a stored cross-site scripting vulnerability because storefront MSRP/MAP popup and Qty Increments notice templates output product names without proper escaping. Attackers with admin product-edit rights can store a malicious product name that executes script when shoppers view product, category, or wishlist pages.

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Meta Information

Published
2026-11-13
Last Modified
2026-11-13
Generated
2026-11-13
AI Q&A
2026-11-13
EPSS Evaluated
N/A
NVD
CVE-2026-128051
EUVD
EUVD-2026-125058

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
openmage magento_lts to 20.18.2 (exc)
openmage magento_lts to 21.0.0-beta3 (exc)
openmage magento-lts to 20.18.2 (exc)
openmage magento-lts to 21.0.0-beta3 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is a stored cross-site scripting (XSS) vulnerability in OpenMage Magento-LTS where product names are not properly escaped in storefront templates. Attackers with admin product-edit rights can inject malicious scripts into product names. When shoppers view product pages, category pages, or wishlists, the scripts execute in their browsers.

Detection Guidance

Check OpenMage Magento-LTS versions for affected releases (before 20.18.2 or 21.0.0-beta3). Inspect product names in the database for HTML/JS payloads like <script> tags. Review templates qtyincrements.phtml and MSRP/MAP popup files for unescaped product name usage.

Impact Analysis

If exploited, this vulnerability allows attackers to execute arbitrary scripts in the browsers of storefront visitors. This could lead to session hijacking, defacement, or theft of sensitive data like cookies or payment information. The impact depends on the attacker's payload and the victim's privileges.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's integrity and confidentiality principles or HIPAA's safeguards for protected health information. Compliance may be compromised if customer data is exposed due to the XSS attack.

Mitigation Strategies

Upgrade to patched versions (20.18.2, 20.19.0, or 21.0.0-beta3+). Restrict admin product-edit permissions. Audit product names for malicious scripts. Disable unused MSRP/MAP features. Apply template fixes to escape product names with escapeHtml() and jsonEncode().

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