CVE-2026-35223 Joomla! Core - [20260508] - Improper access check in com_config webservice endpoints
Attackers can bypass access controls to read configuration data via Joomla webservice endpoints, requiring a patch.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-35223?
CVE-2026-35223 is a high-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 allows unauthorized access to com_config webservice endpoints.
Weakness: CWE-284
Which versions are affected by CVE-2026-35223?
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-2026-35223?
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-2026-35223 being exploited?
There is no known exploitation of CVE-2026-35223 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
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-2026-35223, GHSA-jvvp-39jc-x988.