CVE-2026-90913

MEDIUMCVSS 5.5/10EPSS 0.26%

Last modified

CVE-2026-90913 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. 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.. EPSS estimates a 0.26% chance of exploitation in the next 30 days.

Description

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.

Metrics

Weakness Enumeration

Affected Software

VendorProductVersions
JoomlaJoomla\!>= 4.0.0, < 5.4.8
JoomlaJoomla\!>= 6.0.0, < 6.1.3

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-90913?
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.
How severe is CVE-2026-90913?
CVE-2026-90913 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.26% probability of exploitation in the next 30 days.
How do I fix CVE-2026-90913?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST