Path Traversal Vulnerability in OpenCart's Extension Installer by OpenCart
CVE-2026-5331

5.1MEDIUM

Key Information:

Vendor

OpenCart

Status
Opencart
Vendor
CVE Published:
2 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-5331?

A vulnerability in OpenCart 4.1.0.3 allows for path traversal through the Extension Installer Page's installer.php file. This flaw could enable attackers to manipulate file paths and gain unauthorized access to sensitive areas of the system. The exploit can be executed remotely, posing a significant risk, especially since the vendor did not respond to early notifications regarding this security issue. Organizations using this version of OpenCart are advised to take immediate action to mitigate potential exploits.

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Affected Version(s)

OpenCart 4.1.0.3

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-2026-5331 - Proof of Concept

References

https://vuldb.com/vuln/354665
vdb-entry
https://vuldb.com/vuln/354665/cti
signaturepermissions-required
https://vuldb.com/submit/780814
third-party-advisory

CVSS V4

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

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

hai271120 (VulDB User)
VulDB CNA Team
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