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

2025-09-16 00:00

Dmitrii Ignatyev

Strategic Overview

Status

Patched in 2.57

Affected ThemeSydney

Affected Version<= 2.56

CVSS5.3Medium

CVECVE-2025-8999

View all Sydney vulnerabilities

Vulnerability Overview

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.

Technical Analysis

REMEDIATION: Update to version 2.57, or a newer patched version --- IDENTIFIER: CWE-862 (Missing Authorization) The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

External References

https://www.cve.org/CVERecord?id=CVE-2025-8999 https://www.wordfence.com/threat-intel/vulnerabilities/id/965582c6-a52e-4f88-81ef-b5dd761a0c23

CVSS Vector

5.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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