CVE-2026-120205
Received Received - Intake

Stored XSS in Thelia E-commerce Platform

Publication date: 2026-10-31

Last updated on: 2026-10-31

Assigner: VulnCheck

Description
Thelia before 3.1.0 contains a stored cross-site scripting vulnerability in ForSomeCustomers::getSummary() that allows unauthenticated attackers to inject scripts via unescaped customer names. Attackers can register with a script payload as their name that executes when administrators view related coupons, stealing CSRF tokens to create administrator accounts.

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Meta Information

Published
2026-10-31
Last Modified
2026-10-31
Generated
2026-10-31
AI Q&A
2026-10-31
EPSS Evaluated
N/A
NVD
CVE-2026-120205
EUVD
EUVD-2026-114726

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
Thelia Thelia 0
Thelia Thelia Core 0

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

CVE-2026-120205 is a stored cross-site scripting (XSS) vulnerability in Thelia, an open-source e-commerce platform. It allows unauthenticated attackers to inject malicious scripts by registering with a script payload as their customer name. When administrators view related coupons, the injected script executes, potentially stealing CSRF tokens to create administrator accounts.

Detection Guidance

To detect this vulnerability, inspect Thelia installations for versions before 3.1.0. Check coupon condition summaries in the admin panel for unescaped customer names. Review server logs for GET requests to /admin/coupon/draw/conditionsSummaries/{couponId} with unexpected payloads.

Impact Analysis

An attacker could gain full administrative access to the Thelia platform, allowing them to create super-admin accounts, access customer data, view order details, and modify shop settings. This could lead to complete account takeover and compromise of sensitive information.

Compliance Impact

This vulnerability could lead to unauthorized access to personal and sensitive data, violating GDPR and HIPAA compliance. It may result in data breaches, unauthorized processing of personal data, and failure to protect patient or customer information, leading to legal penalties and reputational damage.

Mitigation Strategies

Upgrade Thelia to version 3.1.0 or later immediately. If upgrading is not possible, apply the patch from the commit c90d59375089a0833a56703c6f9f9ddea17bddc9 to sanitize customer names in coupon summaries.

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