CVE-2026-64791

Received Received - Intake

Unauthorized Extension Management in Joomla

Publication date: 2026-07-22

Last updated on: 2026-07-22

Assigner: Joomla! Project

Description

Administrator routes and install/update/uninstall processing did not consistently enforce component-management and installation permissions. An unauthorized backend user or CSRF attack could install, update or remove extensions.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-07-22

Last Modified

2026-07-22

Generated

2026-07-23

AI Q&A

2026-07-23

EPSS Evaluated

N/A

NVD

CVE-2026-64791

Affected Vendors & Products

Vendor	Product	Version / Range
joomla	joomla	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-284	The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
CWE-352	The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.

Attack-Flow Graph

Executive Summary

This vulnerability involves Joomla's administrator routes for install, update, and uninstall actions not properly enforcing component-management permissions. An attacker without authorization or via a CSRF attack could exploit this to install, update, or remove extensions on the system.

Impact Analysis

An attacker could gain control over your Joomla site by installing malicious extensions, removing critical ones, or updating existing ones to vulnerable versions. This could lead to full site compromise, data theft, or further attacks.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR's integrity and confidentiality requirements or HIPAA's security rules. Organizations may face compliance violations, fines, or legal consequences if exploited.

Mitigation Strategies

Ensure all users with backend access have appropriate component-management and installation permissions. Review and restrict CSRF protections to prevent unauthorized actions. Monitor extension changes and disable unnecessary user roles.

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