CVE-2026-57828

Severity CVSS v4.0:

CRITICAL

Type:

CWE-434 Unrestricted Upload of File with Dangerous Type

Publication date:

11/07/2026

Last modified:

11/07/2026

Description

The Joomla extension Phoca Downloads is vulnerable to an authenticated arbitrary file upload that allows registered users uploading executable files and leads to full RCE.

Impact

Vector 4.0

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H CVSS v4.0 Severity and Metrics:

Base Score: 9.00 CRITICAL
Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Attack Requirements (AT): Present
Privileges Required (PR): Low
User Interaction (UI): None
Confidentiality (VC): High
Integrity (VI): High
Availability (VA): High
Confidentiality (SC): High
Integrity (SI): High
Availability (SA): High

Base Score 4.0

9.00

Severity 4.0

CRITICAL

References to Advisories, Solutions, and Tools

https://mysites.guru/blog/phoca-download-authenticated-file-upload-rce/
https://www.phoca.cz/phocadownload