Joomla 4.0.x < 5.4.7 / 6.0.x < 6.1.2 Joomla 6.1.2 & 5.4.7 Security & Bugfix Release (joomla-6-1-2-5-4-7-security-bugfix-release)

medium Nessus Plugin ID 325458

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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 5.4.7 or 6.0.x prior to 6.1.2. It is, therefore, affected by a vulnerability.

- An improper access check allows unauthorized users to create custom fields via webservices endpoints.
(CVE-2026-48958)

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 5.4.7 / 6.1.2 or later.

Plugin Details

Severity: Medium

ID: 325458

File Name: joomla_612.nasl

Version: 1.5

Type: Remote

Family: CGI abuses

Published: 7/7/2026

Updated: 7/22/2026

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

Supported Sensors: Nessus

Enable CGI Scanning: true

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.09

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-48958

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6.4

Threat Score: 2.5

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H

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: 7/7/2026

Vulnerability Publication Date: 7/7/2026

Reference Information

CVE: CVE-2026-48958

IAVA: 2026-A-0677

Detections

Analytics