CVE-2025-8999CWE-862broken-access-control

CVE-2025-8999

Medium · published September 17, 2025

CVSS v3.1
5.3
EPSS
0%
Percentile
19.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00281 · 19.5th percentile
Weakness
CWE-862 · Missing Authorization
Published
2025-09-17T16:15Z
References (5)
https://research.cleantalk.org/cve-2025-8999/ · [email protected]https://themes.trac.wordpress.org/browser/sydney/2.55/inc/classes/class-sydney-modules.php#L166 · [email protected]https://themes.trac.wordpress.org/browser/sydney/2.55/inc/modules/class-sydney-modules.php#L72 · [email protected]https://themes.trac.wordpress.org/changeset/288374/ · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/965582c6-a52e-4f88-81ef-b5dd761a0c23?source=cve · [email protected]
EPSS history
Timeline
  • 17 SEP 11:25Z
    Sydney <= 2.56 - Missing Authorization to Authenticated (Subscriber+) Limited Theme Options Update
    cvelistv5