CVE-2026-65885: critical vulnerability in balbooa.com Gridbox extension for Joomla
Joomla Extension - balbooa.com - Authenticated arbitrary file upload in Gridbox < 2.20.2
Published · Updated
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50Vexday Risk Score
Prioritize patching. It exploitation observed by VulnCheck.
ssvc Actcvss 9.4epss 0.5%
from disclosure to weapon
Published on NVDJul 29
VulnCheckJul 29
Joomla Extension - balbooa.com - Authenticated arbitrary file upload in Gridbox < 2.20.2 - File upload methods allows authenticated attackers to upload arbitrary files. Turns into an authenticated RCE if combined with CVE-2026-65884 as the required account can be created by the attacker.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y/U:Red
Affected products
balbooa.com · Gridbox extension for JoomlaRelated CVEs — balbooa.com Gridbox extension for Joomla
In the same product, most dangerous first.
CVE-2026-61425CRITICALJoomla Extension - balbooa.com - Authentication bypass in Gridbox < 1.6.0EPSS 0.6%CVE-2026-65886CRITICALJoomla Extension - balbooa.com - Unauthenticated arbitrary file read in Gridbox < 2.20.2EPSS 0.6%CVE-2026-65888CRITICALJoomla Extension - balbooa.com - Account takeover vulnerability in Gridbox < 2.20.2EPSS 0.5%CVE-2026-65887CRITICALJoomla Extension - balbooa.com - Unauthenticated arbitrary password reset in Gridbox < 2.20.2EPSS 0.5%CVE-2026-65884CRITICALJoomla Extension - balbooa.com - Privilege Escalation in Gridbox < 2.20.2EPSS 0.5%CVE-2026-65890CRITICALJoomla Extension - balbooa.com - Unauthenticated SQL injection in Gridbox < 2.20.2EPSS 0.5%