CVE-2026-78065
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
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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
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.
- Record
CVE-2026-78065- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N - Weakness
- CWE-639
- Updated
- 2026-11-02
EUVDEUVD-2026-70444
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.
- Record
EUVD-2026-70444- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-vwvh-r394-jv9x
Joomla Extension - j2commerce.com - Guest checkout address disclosure to any authenticated user ...
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.
- Record
GHSA-vwvh-r394-jv9x- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-639
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-78065- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - Weakness
- CWE-639
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-78065 is a high vulnerability (CVSS 7.1) in J2commerce.com J2store Extension For Joomla, published September 3, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.35%, the 28th percentile. No source names a fixed version.