CVE-2026-128041
Received Received - Intake

Stored XSS in OpenMage Magento-LTS Admin Feed

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 serves RSS feeds with a text/html content type and does not escape feed entry data, leading to stored cross-site scripting. An unauthenticated guest can submit a product review with script in the nickname, title or text that executes when an administrator opens the pending-reviews feed, enabling admin account takeover.

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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-2026-128041
EUVD
EUVD-2026-125067

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 vulnerability is a stored cross-site scripting (XSS) flaw in OpenMage Magento-LTS versions before 20.18.2 and 21.0.0-beta1 before 21.0.0-beta3. It occurs because RSS feeds are served with a text/html content type without escaping user-submitted data. An unauthenticated attacker can exploit this by submitting a malicious product review with script code in the nickname, title, or text fields. When an administrator views the pending-reviews feed, the script executes, potentially allowing the attacker to take over the admin account.

Detection Guidance

To detect this vulnerability, inspect OpenMage Magento-LTS versions before 20.18.2 or 21.0.0-beta1 to 21.0.0-beta3. Check for stored XSS in product reviews by reviewing feed entries in the pending-reviews feed for unescaped script content in nickname, title, or text fields.

Impact Analysis

If you are an administrator using a vulnerable version of OpenMage Magento-LTS, an attacker could exploit this to execute arbitrary scripts in your browser when viewing the pending-reviews feed. This could lead to admin account takeover, allowing the attacker to gain full control over your store, access sensitive data, or perform unauthorized actions. Even if you are not an admin, if you interact with the compromised feed, your session could be hijacked.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, violating GDPR and HIPAA requirements for data protection and confidentiality. A successful exploit may result in data breaches, triggering mandatory breach notifications and potential fines under these regulations. Compliance with security best practices is compromised, increasing legal and reputational risks.

Mitigation Strategies

Immediately upgrade OpenMage Magento-LTS to version 20.18.2 or later, or 21.0.0-beta3 or later. Remove or sanitize any malicious script content from existing product reviews and disable guest submissions if not required.

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