PT-2025-38145 · WordPress · Sydney

Dmitry Ignatyev · Published 2025-09-17 · Updated 2025-09-17 · CVE-2025-8999

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Sydney theme for WordPress versions prior to 2.57

Description The Sydney theme for WordPress is susceptible to unauthorized data modification due to a missing capability check on the activate modules() function. This allows authenticated attackers with Subscriber-level access or higher to activate or deactivate theme modules.

Recommendations Update the Sydney theme to version 2.57 or later. As a temporary workaround, restrict access for users with Subscriber-level access or lower.

Fix

LPE

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2025-8999

Affected Products

Sydney

References · 10

• https://nvd.nist.gov/vuln/detail/CVE-2025-8999 · Security Note
• https://themes.trac.wordpress.org/changeset/288374 · Note
• https://twitter.com/VulmonFeeds/status/1968331785768419405 · Twitter Post
• https://t.me/cveNotify/135655 · Telegram Post
• https://themes.trac.wordpress.org/browser/sydney/2.55/inc/modules/class-sydney-modules.php#L72 · Note
• https://t.me/CVEtracker/32747 · Telegram Post
• https://research.cleantalk.org/cve-2025-8999 · Note
• https://twitter.com/CVEnew/status/1968349174694568417 · Twitter Post
• https://themes.trac.wordpress.org/browser/sydney/2.55/inc/classes/class-sydney-modules.php#L166 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/965582c6-a52e-4f88-81ef-b5dd761a0c23?source=cve · Note