CVE-2026-78065 Details
Description
Joomla Extension - j2commerce.com - Guest checkout address disclosure to any authenticated user (IDOR) in J2Store 1.0.0-3.3.21, 4.0.0-4.0.21, 4.1.0-4.1.6 - `editAddress()` redirected non-owners away only when the loaded address row had a **non-empty** `user_id` belonging to someone else. Guest-checkout address rows have an empty `user_id`, so that check never triggered for them — any logged-in account guessing a small, sequential `address_id` got a guest customer's full name, street address, and phone number rendered prefilled into the edit form.
A vulnerability in the J2Store extension for Joomla, specifically in versions 1.0.0 through 3.3.21, 4.0.0 through 4.0.21, and 4.1.0 through 4.1.6, allows for address disclosure of guest checkout customers to any authenticated user. This issue arises from an Insecure Direct Object Reference (IDOR) vulnerability in the 'editAddress()' function. The vulnerability occurs because guest checkout address entries have an empty 'user_id', bypassing a check that would normally prevent unauthorized users from accessing another user's address. As a result, any logged-in user could retrieve a guest customer's full name, street address, and phone number by guessing a small, sequential 'address_id'.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 3, 2026CISA-ADP
Assessed Sep 3, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://www.j2commerce.com/ | [email protected] | Vendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| J2Commerce J2Store | >= 1.0.0, <= 3.3.21 (semver) >= 4.0.0, <= 4.0.21 (semver) >= 4.1.0, <= 4.1.6 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 3, 2026 | CVE Modified | CISA-ADP |
| Sep 3, 2026 | New CVE Received | [email protected] |