Joomla 1.0.x < 5.4.8 / 6.0.x < 6.1.3 Joomla 6.1.3 & 5.4.8 Security & Bugfix Release (joomla-6-1-3-5-4-8-security-bugfix-release)

high Nessus Plugin ID 337679

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 1.0.x prior to 5.4.8 or 6.0.x prior to 6.1.3. It is, therefore, affected by a vulnerability.

- Joomla! Core - [20260810] - Unrestricted uploads of SHTML files in Joomla 1.0.0-5.4.7, 6.0.0-6.1.2 - The default list of dangerous files did not include SHTML files. On servers that executed these files, that could lead to code execution. (CVE-2026-73373)

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 5.4.8 / 6.1.3 or later.

Plugin Details

Severity: High

ID: 337679

File Name: joomla_613.nasl

Version: 1.1

Type: Remote

Family: CGI abuses

Published: 8/18/2026

Updated: 8/18/2026

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: 58.14

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2026-73373

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/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: High

Base Score: 8.9

Threat Score: 5.9

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/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: 8/18/2026

Vulnerability Publication Date: 8/18/2026

Reference Information

CVE: CVE-2026-73373

Detections

Analytics