CVE-2026-66490

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 62/100
Published: 2026-07-29 Modified: 2026-10-23 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth Scope Change

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Required
S: Changed
C: Low
I: Low
A: None

Description

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

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
balbooa gridbox < 2.20.2

Bug Bounty Relevance

62 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity

CVSS Score

6.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS — Exploitation Probability

0.27%
Raw Score 0.002660
Percentile 18.5%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00266
2026-10-28
0.00266

Intelligence Sources

nvd ref →