CVE-2026-66490

MEDIUM

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

Title source: cna
STIX 2.1

Description

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

References (2)

Core 2
Core References
Third Party Advisory third-party-advisory
https://mysites.guru/blog/gridbox-23-critical-vulnerabilities/

Scores

CVSS v3 6.1
EPSS 0.0015
EPSS Percentile 5.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
balbooa.com/Gridbox extension for Joomla 1.0.0-2.20.1
Published Jul 29, 2026
Tracked Since Jul 29, 2026