CVE-2026-56291

Severity CVSS v4.0:

CRITICAL

Type:

CWE-434 Unrestricted Upload of File with Dangerous Type

Publication date:

09/07/2026

Last modified:

09/07/2026

Description

The Joomla extension Balbooa Forms is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.

Impact

Vector 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y/U:Red CVSS v4.0 Severity and Metrics:

Base Score: 10.00 CRITICAL
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y/U:Red

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): None
Privileges Required (PR): None
User Interaction (UI): None
Confidentiality (VC): High
Integrity (VI): High
Availability (VA): High
Confidentiality (SC): High
Integrity (SI): High
Availability (SA): High
Automatable (AU): Yes
Provider Urgency (U): Red
Exploit Maturity (E): Attacked

Base Score 4.0

10.00

Severity 4.0

CRITICAL

CVE-2026-56291

Description

Impact

References to Advisories, Solutions, and Tools