CVE-2026-66490 — MEDIUM (6.1)

Q: What is CVE-2026-66490?

CVE-2026-66490 is a vulnerability with a CVSS score of 6.1 (MEDIUM). Joomla Extension - balbooa.com - Stored cross-site scripting via a comment avatar in Gridbox < 2.20.2

Q: How severe is CVE-2026-66490?

CVE-2026-66490 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-66490?

Check the references section above for vendor advisories and patch information. Affected products include: Balbooa Gridbox.

Vulnerability Description

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

CVSS Score

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Balbooa	Gridbox	< 2.20.2

Related Weaknesses (CWE)

CWE-79

References

https://mysites.guru/blog/gridbox-23-critical-vulnerabilities/Third Party Advisory
https://www.balbooa.com/gridboxProduct

FAQ

What is CVE-2026-66490?

CVE-2026-66490 is a vulnerability with a CVSS score of 6.1 (MEDIUM). Joomla Extension - balbooa.com - Stored cross-site scripting via a comment avatar in Gridbox < 2.20.2

How severe is CVE-2026-66490?

CVE-2026-66490 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-66490?

Check the references section above for vendor advisories and patch information. Affected products include: Balbooa Gridbox.