CVE-2026-48899 Joomla! Core - [20260515] - Incorrect Access Control in sample data plugins
Attackers can escalate privileges via improper access checks in sample data plugins, requiring Joomla administrators to apply security patches.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-48899?
CVE-2026-48899 is a medium-severity vulnerability in Joomla Joomla\!, published on 26 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An improper access check allows privilege escalation through the com_users batch task.
Weakness: CWE-284
Which versions are affected by CVE-2026-48899?
1 open source package ship an affected version, including joomla. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
joomla Bitnami | From 4.0.0 | 5.4.6, 6.1.1 |
Products include Joomla Joomla\!.
How do I fix CVE-2026-48899?
Upgrade joomla to a fixed version for your release line: 5.4.6 or 6.1.1.
Is CVE-2026-48899 being exploited?
There is no known exploitation of CVE-2026-48899 in the wild and no public exploit code.
Other vulnerabilities in Joomla Joomla\!
- CVE-2016-10033 PHPMailer Command Injection
- CVE-2023-23752 Joomla! Improper Access Control
- CVE-2026-48902 Joomla! Core - [20260518] - Transport encryption downgrade for password and username reset links
- CVE-2025-25226 [20250401] - Joomla Framework - SQL injection vulnerability in quoteNameStr method of Database package
- CVE-2022-23795 [20220303] - Core - User row are not bound to a authentication mechanism
Sources
Also known as BIT-joomla-2026-48899, GHSA-rfwr-f8vm-98cv.