Cross Site Scripting Vulnerability in OpenCart Autocomplete Workflow
CVE-2026-84438

5.1MEDIUM

Key Information:

Vendor

OpenCart

Status
Opencart
Vendor
CVE Published:
2 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-84438?

A cross site scripting (XSS) vulnerability has been identified in OpenCart versions 4.1.0.3 and 4.1.0.4, which is related to an unspecified function within the Autocomplete Workflow component. This vulnerability allows attackers to manipulate the 'firstname' argument in the file catalog/controller/account/edit.php, resulting in potential unauthorized access and exploitation. The XSS attack can be executed remotely, potentially putting users at risk when interacting with the affected application. Despite early notification attempts to the vendor regarding this security issue, there has been no response, highlighting the urgency for users to implement security measures.

Affected Version(s)

OpenCart 4.1.0.3

OpenCart 4.1.0.4

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-84438 - Proof of Concept

References

https://vuldb.com/vuln/397802
vdb-entrytechnical-description
https://vuldb.com/vuln/397802/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-84438
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Leousum (VulDB User)
VulDB CNA Team
.