CVE-2026-73372: Joomla! Core - [20260809] - Improper ACL checks when injection schema.org contact data in Joomla 5.1.0-5.4.7 and 6.0.0-6.1.2

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-18 · updated 2026-10-22
Weakness: CWE-284

Description

Joomla! Core - [20260809] - Improper ACL checks when injection schema.org contact data in Joomla 5.1.0-5.4.7 and 6.0.0-6.1.2 - An improper access check injects contact information for unaccessible contact items into schema.org snippets.

Affected products

Joomla!: from 5.1.0 before 5.4.8; from 6.0.0 before 6.1.3 — fixed in 5.4.8, 6.1.3

How to fix

Upgrade to a fixed version: Joomla! 5.4.8, 6.1.3. Check the vendor advisory for mitigations.

References

https://developer.joomla.org/security-centre/1076-20260809-core-improper-acl-checks-when-injection-schema-org-contact-data.html
https://www.joomla.org/

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