VulnerabilityDeferred
CVE-2025-8999
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.
MEDIUM 5.3EPSS 0.28%
Does this matter?
Lower severity and a low EPSS score (0.28%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- EPSS
- 0.28% probability · 21th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-862
- Source
- security@wordfence.com
References
- https://research.cleantalk.org/cve-2025-8999/
- https://themes.trac.wordpress.org/browser/sydney/2.55/inc/classes/class-sydney-modules.php#L166
- https://themes.trac.wordpress.org/browser/sydney/2.55/inc/modules/class-sydney-modules.php#L72
- https://themes.trac.wordpress.org/changeset/288374/
- https://www.wordfence.com/threat-intel/vulnerabilities/id/965582c6-a52e-4f88-81ef-b5dd761a0c23?source=cve
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.