CVE-2026-66490

CVE-2026-66490: Joomla Extension - balbooa.com - Stored cross-site scripting via a comment avatar in Gridbox < 2.20.2

Vendor Balbooa.com

Product Gridbox extension for Joomla

Weakness CWE-79 · XSS

Published July 29, 2026

Last update July 29, 2026

View on NVD All CVEs

CVSS base score

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What the vulnerability does

01Description

Joomla Extension - balbooa.com - Stored cross-site scripting via a comment avatar in Gridbox < 2.20.2

Key dates

02Disclosure timeline

July 29, 2026 CVE published

July 29, 2026 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-66490 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html AskarLabs — CWE-79 write-up Cross-Site Scripting

Related vulnerabilities

04Related CVE

CVE-2026-66440 WordPress WPIDE – File Manager & Code Editor plugin <= 3.5.7 - Cross Site Scripting (XSS) vulnerability CVE-2026-5158 PostX <= 5.0.13 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Comments Block CVE-2026-18988 Easy Accordion <= 3.1.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'accordionTitleTag' Block Attribute CVE-2026-12231 Exclusive Addons for Elementor <= 2.7.9.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'exad_infobox_image' CVE-2026-66694 WordPress Thrive Architect plugin <= 10.9.3.1 - Cross Site Scripting (XSS) vulnerability