CVE-2026-74252 — Joomla Extension - j2commerce.com - Stored XSS in Guest checkout in J2Store 1.0.0-3.3.20, 4.0.0-4.0.20, 4.1.0-4.1.5

CVE-2026-74252

Joomla Extension - j2commerce.com - Stored XSS in Guest checkout in J2Store 1.0.0-3.3.20, 4.0.0-4.0.20, 4.1.0-4.1.5 PUBLISHED

Description (CNA)

Joomla Extension - j2commerce.com - Stored XSS in Guest checkout in J2Store 1.0.0-3.3.20, 4.0.0-4.0.20, 4.1.0-4.1.5 - J2Commerce 4.1.5 is vulnerable to Stored Cross-Site Scripting (XSS) through the guest checkout billing address fields. An unauthenticated attacker exploits a filter bypass in Joomla's Input::getArray() combined with PHP's variables_order=EGPCS (Cookie overrides POST in $_REQUEST ) to store unsanitized HTML in fields such as billing_first_name.

Affected (CNA)

Vendor / product	Versions
j2commerce.com / J2Store extension for Joomla	affected 1.0.0-3.3.20; affected 4.0.0-4.0.20; affected 4.1.0-4.1.5

CWE

CWE-79

References

https://www.j2commerce.com/

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.