CVE-2026-48899
Analyzed Analyzed - Analysis Complete

Improper Access Check Leads to Privilege Escalation in Joomla

Publication date: 2026-05-26

Last updated on: 2026-05-26

Assigner: Joomla! Project

Description
An improper access check allows privilege escalation through the com_users batch task.

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Meta Information

Published
2026-05-26
Last Modified
2026-05-26
Generated
2026-07-06
AI Q&A
2026-05-26
EPSS Evaluated
2026-07-04
NVD
CVE-2026-48899
EUVD
EUVD-2026-31880

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
joomla joomla! From 4.0.0 (inc) to 5.4.6 (exc)
joomla joomla! From 6.0.0 (inc) to 6.1.1 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

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Executive Summary

CVE-2026-48899 is a security vulnerability in Joomla! CMS versions 4.0.0 through 5.4.5 and 6.0.0 through 6.1.0. It involves an improper access check that allows unauthorized users to escalate their privileges through the com_users batch task, specifically related to the installation of sample data.

Impact Analysis

This vulnerability can allow unauthorized users to perform actions that should be restricted, such as installing sample data, by escalating their privileges. This could lead to unauthorized changes in the Joomla! CMS environment, potentially compromising the integrity and security of the website.

Mitigation Strategies

To mitigate the CVE-2026-48899 vulnerability, users should upgrade their Joomla! CMS installations to versions 5.4.6 or 6.1.1, where the issue has been fixed.

This vulnerability affects Joomla! CMS versions 4.0.0 through 5.4.5 and 6.0.0 through 6.1.0, so upgrading beyond these versions is critical to prevent unauthorized privilege escalation.

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