CVE-2026-78000
Medium
Description
Joomla Extension - j2commerce.com - Reflected XSS via `filter_tag`, `pricefrom` and `priceto` in J2Store 1.0.0-3.3.21, 4.0.0-4.0.21, 4.1.0-4.1.6 - Four task handlers accepted a base64-encoded URL from user input and redirected to it without validating the destination host, enabling phishing using the shop's trusted domain. No authentication required.
SeverityMedium
CVSS5.3
Exploit probability—
ProductJ2Store extension for Joomla
PublishedSep 3, 2026
First seenSep 3, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| j2commerce.com J2Store extension for Joomla | 1.0.0-3.3.21, 4.0.0-4.0.21, 4.1.0-4.1.6 | — |
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