Vulnerability · Published May 26, 2026 · Assigned by Joomla
CVE-2026-35223Joomla! Core - [20260508] - Improper access check in com_config webservice endpoints
High 8.6
In plain English
A high-severity improper access control in Joomla! CMS from Joomla! Project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 12.8% (higher than 96% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 4.0)8.6High
Exploit odds (30 days)12.8%top 3.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
An improper access check allows unauthorized access to com_config webservice endpoints.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Joomla! Project | Joomla! CMS | 4.0.0-5.4.56.0.0-6.1.0 |
Weakness: CWE-284 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N