CVE-2026-65885CWE-434unrestricted-file-upload

CVE-2026-65885

High · published July 29, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
43.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00521 · 43.4th percentile
Weakness
CWE-434 · Unrestricted Upload of File with Dangerous Type
Published
2026-07-29T17:19Z
Affected products (1)
ProductVersionsFixed in
balbooa/gridbox< 2.20.22.20.2
References (2)
https://mysites.guru/blog/gridbox-23-critical-vulnerabilities/ · [email protected]https://www.balbooa.com/gridbox · [email protected]
EPSS history
Timeline
  • 29 JUL 12:05Z
    Joomla Extension - balbooa.com - Authenticated arbitrary file upload in Gridbox < 2.20.2
    cvelistv5