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Vulnerability record · CVE-2026-23899 · published 1 April 2026

CVE-2026-23899: Joomla\! improper access control vulnerability

Joomla · Joomla\!

An improper access check allows unauthorized access to webservice endpoints.

8.6 CVSS 4.0 High EPSS 0.40% · top 68.2% CWE-284 · Improper access control
8.6CVSS 4.0 base score
0.40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

An improper access check allows unauthorized access to webservice endpoints.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://developer.joomla.org/security-centre/1032-20260306-core-improper-access-check-in-webservice-endpoints.html Vendor Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-23899), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.