CVE-2025-8999

Sydney <= 2.56 - Missing Authorization to Authenticated (Subscriber+) Limited Theme Options Update

Published Sep 17, 2025 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-29712 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.
History
Type Values Removed Values Added
First Time appeared Athemes
Athemes sydney Toolbox
Wordpress
Wordpress wordpress
Vendors & Products Athemes
Athemes sydney Toolbox
Wordpress
Wordpress wordpress
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Sydney <= 2.56 - Missing Authorization to Authenticated (Subscriber+) Limited Theme Options Update
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Wordfence
Published
Updated
Apr 8, 2026, 5:10 PM
Reserved
Aug 13, 2025, 6:26 PM
Status
Deferred
Published
Sep 17, 2025, 12:15 PM
Modified
Sep 26, 2026, 12:10 AM