Vulnerability · Published Nov 5, 2026 · Assigned by Joomla
CVE-2026-107903Joomla Extension - balbooa.com - Stored XSS in reviews via inconsistent sanitization in Gridbox < 2.20.5.0
High 8.3
In plain English
A high-severity cross-site scripting in Gridbox extension for Joomla from balbooa.com. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities).
Severity (CVSS 3.1)8.3High
Exploit odds (30 days)0.3%top 72.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Joomla Extension - balbooa.com - Stored XSS in reviews via inconsistent sanitization in Gridbox < 2.20.5.0
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| balbooa.com | Gridbox extension for Joomla | 1.0.0-2.20.4.2 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L
References
- https://www.balbooa.com/gridbox product