CVE-2026-48900 Joomla! Core - [20260516] - Incorrect Access Control in com_scheduler
Low-privileged users can modify scheduler task types due to improper access control in Joomla CMS.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-48900?
CVE-2026-48900 is a medium-severity missing authorization vulnerability in Joomla Joomla\!, published on 26 May 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
An improper access check allowed low privileged users to edit the task types of existing scheduler tasks.
Weakness: CWE-284
Which versions are affected by CVE-2026-48900?
1 open source package ship an affected version, including joomla. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
joomla Bitnami | From 4.1.0 | 5.4.6, 6.1.1 |
Products include Joomla Joomla\!.
How do I fix CVE-2026-48900?
Upgrade joomla to a fixed version for your release line: 5.4.6 or 6.1.1.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-48900 being exploited?
There is no known exploitation of CVE-2026-48900 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-2026-48900, GHSA-cwvc-2p7m-grcm.