CVE-2026-84438
Received Received - Intake

Cross-Site Scripting in OpenCart Autocomplete Workflow

Publication date: 2026-09-02

Last updated on: 2026-09-02

Assigner: VulDB

Description
A vulnerability was determined in OpenCart 4.1.0.3/4.1.0.4. This affects an unknown function of the file catalog/controller/account/edit.php of the component Autocomplete Workflow. This manipulation of the argument firstname causes cross site scripting. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-02
Last Modified
2026-09-02
Generated
2026-09-02
AI Q&A
2026-09-02
EPSS Evaluated
N/A
NVD
CVE-2026-84438
EUVD
EUVD-2026-69801

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
opencart opencart to 4.1.0.4 (inc)

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
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.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a stored cross-site scripting (XSS) vulnerability in OpenCart versions 4.1.0.3 and 4.1.0.4. An attacker can inject malicious HTML into their account profile fields, such as the firstname field. When an administrator accesses backend workflows and selects the attacker-controlled customer, the stored payload is retrieved via the admin customer autocomplete API. The backend decodes HTML entities and injects the content unsafely into the HTML DOM, leading to arbitrary JavaScript execution in the administrator's browser.

Detection Guidance

To detect this vulnerability, inspect OpenCart installations for versions 4.1.0.3 or 4.1.0.4. Check if malicious payloads are stored in customer profile fields like 'firstname' by reviewing database entries in the 'customer' or 'customer_description' tables. Monitor admin workflows for unexpected JavaScript execution when selecting customers.

Impact Analysis

An attacker could exploit this to perform actions on behalf of the administrator, steal their session, or compromise order and customer management workflows. Regular customers without admin privileges can execute this attack, potentially leading to unauthorized access or data manipulation.

Compliance Impact

This vulnerability could impact compliance with GDPR and HIPAA by enabling unauthorized access to sensitive customer data. A stored XSS attack may allow attackers to steal session cookies or credentials, leading to data breaches. GDPR requires protecting personal data, and HIPAA mandates safeguarding health-related information. Exploitation could result in unauthorized data access or modification, violating these regulations.

Mitigation Strategies

Upgrade OpenCart to a patched version if available. Sanitize user input in profile fields by escaping HTML entities before storage. Implement strict output encoding in admin interfaces to prevent XSS execution. Restrict admin privileges and monitor for suspicious admin actions.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-84438. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart