CVE-2026-66490CWE-79cross-site-scripting

CVE-2026-66490

Medium · published July 29, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
17.5
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00266 · 17.5th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-07-29T18:16Z
Affected products (1)
ProductVersionsFixed in
balbooa/gridbox< 2.20.22.20.2
References (2)
https://mysites.guru/blog/gridbox-23-critical-vulnerabilities/ · [email protected]https://www.balbooa.com/gridbox · [email protected]
EPSS history
Timeline
  • 29 JUL 13:54Z
    Joomla Extension - balbooa.com - Stored cross-site scripting via a comment avatar in Gridbox < 2.20.2
    cvelistv5