CVE-2026-90913CWE-284broken-access-control

CVE-2026-90913

Medium · published September 29, 2026

CVSS v3.1
5.5
EPSS
0%
Percentile
11.1
In the wild
Unconfirmed
What it is

Joomla! Core - [20260903] - Core - Improper ACL checks for access level webservice endpoints in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3 - An improper access check allows unauthorized users to perform mutation actions in access level endpoints.

The record
Technical detail
CVSS v3.1
5.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N
CVSS v4.0
7.0 · CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS
0.00214 · 11.1th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-09-29T21:17Z
Affected products (2)
ProductVersionsFixed in
joomla/joomla\!≥ 4.0.0, < 5.4.85.4.8
joomla/joomla\!≥ 6.0.0, < 6.1.36.1.3
References (2)
https://developer.joomla.org/security-centre/1083-20260903-core-improper-acl-checks-for-user-level-webservice-endpoints.html · [email protected]https://www.joomla.org/ · [email protected]
EPSS history
Timeline
  • 01 OCT 03:50Z
    EPSS moved — → 0%
    epss
  • 29 SEP 16:36Z
    Joomla! Core - [20260903] - Core - Improper ACL checks for access level webservice endpoints in Joomla 4.0.0-5.4.8, 6.0.0-6.1.3
    cvelistv5