CVE-2026-65885

critical · 9.4

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.

9.4

CVSS

0.3%

EPSS (exploit prob.)

22nd

EPSS percentile

2026-07-29

Published

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:Red

Weaknesses

CWE-434

Affected products

Vendor	Product	Affected versions
balbooa	gridbox	< 2.20.2

Check a specific version with /api/v1/cve/match.

References

https://mysites.guru/blog/gridbox-23-critical-vulnerabilities/
https://www.balbooa.com/gridbox

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-65885