Joomla 3.0.x < 3.9.26 Multiple Vulnerabilities (5835-joomla-3-9-26)

medium Nessus Plugin ID 148641
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A PHP application running on the remote web server is affected by multiple vulnerabilities.


According to its self-reported version, the instance of Joomla! running on the remote web server is 3.0.x prior to 3.9.26. It is, therefore, affected by multiple vulnerabilities:

- A cross-site scripting (XSS) vulnerability exists in the logo parameter of the default templates page due to improper validation of user-supplied input before returning it to users. An unauthenticated, remote attacker can exploit this, by convincing a user to click a specially crafted URL, to execute arbitrary script code in a user's browser session (CVE-2021-26030).

- A local file inclusion vulnerability exists on the module layout settings component. An unauthenticated, remote attacker may be able to leverage this issue to view arbitrary files or to execute arbitrary PHP code on the remote host (CVE-2021-26031).

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


Upgrade to Joomla! version 3.9.26 or later.

See Also

Plugin Details

Severity: Medium

ID: 148641

File Name: joomla_3926.nasl

Version: 1.6

Type: remote

Family: CGI abuses

Published: 4/15/2021

Updated: 5/28/2021

Dependencies: joomla_detect.nasl

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2021-26031


Risk Factor: Low

Score: 3.8


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

Temporal Vector: E:U/RL:OF/RC:C


Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

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

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/13/2021

Vulnerability Publication Date: 4/13/2021

Reference Information

CVE: CVE-2021-26030, CVE-2021-26031

IAVA: 2021-A-0179-S