What is CVE-2026-66489?

CVE-2026-66489 is a medium-severity vulnerability in Balbooa Gridbox, classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-07-29.

How severe is CVE-2026-66489?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Information disclosure in Balbooa Gridbox

CVE-2026-66489

Joomla Extension - balbooa.com - Various unauthenticated file system disclosure in Gridbox < 2.20.2

Vulnerability class: Information Disclosure

EPSS: 0.002 (10.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Balbooa Gridbox
Balbooa.com Gridbox Extension For Joomla — versions 1.0.0-2.20.1

Weakness classification (CWE)

CWE-200 — Information Disclosure

References

security@joomla.org (Product, product)
security@joomla.org (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-66489?: CVE-2026-66489 is a medium-severity vulnerability in Balbooa Gridbox, classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-07-29.
How severe is CVE-2026-66489?: Medium severity. CVSS v3 base score is 5.3 out of 10.