Vulnerability Intelligence Report
Joomla Extension - balbooa.com - Authenticated arbitrary file upload in Gridbox < 2.20.2
CVE-2026-65885
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.
No Active Exploit Signals
CVSS Base Score
9.4
CRITICAL
EPSS Probability:0.29%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-434 ↗CWE-434: Unrestricted Upload of File with Dangerous Type
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| balbooa.com | Gridbox extension for Joomla | 1.0.0-2.20.1 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.286%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Joomla! Project · Vendor · USA |
| Reserved | 2026-07-23T09:17:01 |
| Published | 2026-07-29T12:05:48 |
| Last Updated | 2026-08-12T13:52:19 |
Community Chatter & Buzz