Description

The Sydney theme for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'activate_modules' function in all versions up to, and including, 2.56. This makes it possible for authenticated attackers, with Subscriber-level access and above, to activate or deactivate various theme modules.

INFO

Published Date :

2025-09-17T11:25:55.832Z

Last Modified :

2026-04-08T17:10:13.080Z

Source :

Wordfence
AFFECTED PRODUCTS

The following products are affected by CVE-2025-8999 vulnerability.

Vendors Products
Athemes
  • Sydney Toolbox
Wordpress
  • Wordpress
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-8999.

URL Resource
https://research.cleantalk.org/cve-2025-8999/ cve-icon cve-icon
https://themes.trac.wordpress.org/browser/sydney/2.55/inc/classes/class-sydney-modules.php#L166 cve-icon cve-icon
https://themes.trac.wordpress.org/browser/sydney/2.55/inc/modules/class-sydney-modules.php#L72 cve-icon cve-icon
https://themes.trac.wordpress.org/changeset/288374/ cve-icon cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/965582c6-a52e-4f88-81ef-b5dd761a0c23?source=cve cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact