Is CVE-2026-84438 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-84438 being exploited in the wild.

How severe is CVE-2026-84438?

Low severity, with a CVSS score of 3.5, published 2 September 2026.

Is there a fix for CVE-2026-84438?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-84438 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-84438?

Check whether you run OpenCart at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-84438: OpenCart stored XSS in customer profile fields

CVE-2026-84438 · Severity: low · CVSS 3.5 · Published 2026-09-02

OpenCart is an open-source e-commerce platform used to build online stores. A vulnerability allows regular customers to inject malicious HTML code into their account profile fields (such as first name), which is then executed in administrators' browsers when they manage orders or customer returns. An attacker could steal admin session tokens, modify orders, or compromise customer data.

Technologies: OpenCart. Vendors: OpenCart.

Quick answers

Is CVE-2026-84438 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-84438 being exploited in the wild.
How severe is CVE-2026-84438?: Low severity, with a CVSS score of 3.5, published 2 September 2026.
Which products and versions are affected?: OpenCart 4.1.0.3, 4.1.0.4.
Is there a fix for CVE-2026-84438?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-84438 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-84438?: Check whether you run OpenCart at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This is a stored cross-site scripting (XSS) vulnerability in OpenCart's customer account management and admin order/return workflows. The root cause is improper output encoding in the admin backend: customer-supplied firstname/lastname values are stored in the database without sanitization (catalog/controller/account/edit.php), retrieved by the admin autocomplete API, entity-encoded, then decoded and injected into HTML via JavaScript string concatenation and .html() calls (admin/view/javascript/common.js, admin/view/template/sale/order_info.twig). An unauthenticated attacker requires only a normal front-office customer account; they inject payload in their profile, and when an admin opens the order or returns workflow and selects that customer, the JavaScript executes in the admin's browser context. No patch has been made available despite early vendor notification.

Affected products

OpenCart OpenCart 4.1.0.3, 4.1.0.4

Timeline

2026-09-02: disclosed: Publicly disclosed; vendor did not respond to early notification

References

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