CVE-2026-78000: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in j2commerce.com J2Store extension for Joomla
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.
CVE-2026-78000: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in j2commerce.com J2Store extension for Joomla
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.
CVSS v4.0
Score 5.3medium
Affected software
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Joomla
- Date Reserved
- 2026-08-21T19:23:55.924Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a99711eacd9273b49f40568
Added to database: 09/03/2026, 13:07:42 UTC
Last updated: 09/03/2026, 14:52:33 UTC
Views: 5
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