Download Quota Manipulation Vulnerability in J2Store by j2commerce.com
CVE-2026-67358

5.3MEDIUM

Key Information:

Vendor

J2commerce.com

Status
J2store Extension For Joomla
Vendor
CVE Published:
21 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-67358?

The J2Store extension for Joomla has a vulnerability that allows authenticated users with a valid order token to manipulate the download limit of files associated with different orders. This issue arises from the absence of a CSRF token on the related endpoint, which could permit unauthorized alterations to download quotas, potentially leading to unauthorized access to digital products.

Affected Version(s)

J2Store extension for Joomla 1.0.0-3.3.20

J2Store extension for Joomla 4.0.0-4.0.20

J2Store extension for Joomla 4.1.0-4.1.5

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-J2store-2026
Created by murrez

References

https://www.j2commerce.com/
product

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
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

Murrez
.