Vulnerability · Published Jul 7, 2026 · Assigned by Joomla
CVE-2026-48958Joomla! Core - [20260712] - Incorrect Access Control in com_fields webservice endpoints
Medium 6.4
In plain English
A medium-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 0.5% (higher than 40% of all known vulnerabilities).
Severity (CVSS 4.0)6.4Medium
Exploit odds (30 days)0.5%top 59.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An improper access check allows unauthorized users to create custom fields via webservices endpoints.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Joomla! Project | Joomla! CMS | 4.0.0-5.4.66.0.0-6.1.1 |
Weakness: CWE-284 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:H