CVE-2026-78065

Summary

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.

Affected Software

Weaknesses

• CWE-639: CWE-639 (Authorization Bypass Through User-Controlled Key)

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://www.j2commerce.com/

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