CVE-2025-8999
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk18th percentile - higher than 18% of all known CVEs
Summary
The Sydney theme for WordPress (all versions up to and including 2.56) lacks a capability check on the 'activate_modules' function. Authenticated attackers with Subscriber-level access or higher can activate or deactivate theme modules.
Risk Assessment
A low-privileged user can alter theme configuration, potentially causing site malfunction or enabling further attacks. This affects the integrity and availability of the site.
Recommendation
Update the Sydney theme to a version newer than 2.56. Until then, consider restricting new user registrations or reviewing user roles.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS