Cross Site Scripting in OpenCart Autocomplete Workflow by OpenCart
CVE-2026-84437

5.1MEDIUM

Key Information:

Vendor

OpenCart

Status
Opencart
Vendor
CVE Published:
2 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-84437?

A flaw has been identified in OpenCart's Autocomplete Workflow, specifically within the address.php file located in the catalog/controller/account directory. This vulnerability allows attackers to craft malicious inputs that, when processed by the affected function, could execute arbitrary JavaScript in the context of the user's browser. This creates a potential for data theft, session hijacking, or unauthorized actions performed on behalf of the user. This issue affects OpenCart versions 4.1.0.3 and 4.1.0.4. Despite being disclosed, the vendor has not yet responded to the details of this vulnerability.

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-2026-84437 - Proof of Concept

References

https://vuldb.com/vuln/397801
vdb-entrytechnical-description
https://vuldb.com/vuln/397801/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-84437
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
.