Joomla 4.0.x < 5.4.4 / 6.0.x < 6.0.4 Joomla 6.0.4 & 5.4.4 Security & Bugfix Release (5944-joomla-6-0-4-5-4-4-security-bugfix-release)

high Nessus Plugin ID 304414

Synopsis

A PHP application running on the remote web server is affected by a vulnerability.

Description

According to its self-reported version, the instance of Joomla! running on the remote web server is 4.0.x prior to 5.4.4 or 6.0.x prior to 6.0.4. It is, therefore, affected by a vulnerability.

- An improper access check allows unauthorized access to webservice endpoints. (CVE-2026-23899)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Joomla! version 5.4.4 / 6.0.4 or later.

Plugin Details

Severity: High

ID: 304414

File Name: joomla_604.nasl

Version: 1.1

Type: remote

Family: CGI abuses

Published: 3/31/2026

Updated: 3/31/2026

Configuration: Enable paranoid mode, Enable thorough checks (optional)

Supported Sensors: Nessus

Enable CGI Scanning: true

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

CVSS Score Source: CVE-2026-23899

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:joomla:joomla%5c%21

Required KB Items: www/PHP, Settings/ParanoidReport, installed_sw/Joomla!

Exploit Ease: No known exploits are available

Patch Publication Date: 3/31/2026

Vulnerability Publication Date: 3/31/2026

Reference Information

CVE: CVE-2026-23899

Detections

Analytics