Medium severity · published Sep 3, 2026
CVE-2026-78000
Joomla Extension - j2commerce.com - Open redirect in cart controller in J2Store 1.0.0-3.3.20, 4.0.0-4.0.20, 4.1.0-4.1.5
5.3
CVSS
0.5%
EPSS
No
On KEV
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JE
J2Store extension for Joomla · j2commerce.com
1.0.0-3.3.21; 4.0.0-4.0.21; 4.1.0-4.1.6 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-78000
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-78000
www.j2commerce.com
https://www.j2commerce.com/
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