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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.

PUBLISHED Reserved 2025-08-13 | Published 2025-09-17 | Updated 2025-09-17 | Assigner Wordfence




MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Problem types

CWE-862 Missing Authorization

Product status

Default status
unaffected

* (semver)
affected

Timeline

2025-08-15:Vendor Notified
2025-09-16:Disclosed

Credits

Dmitrii Ignatyev finder

References

www.wordfence.com/...-a52e-4f88-81ef-b5dd761a0c23?source=cve

themes.trac.wordpress.org/...lasses/class-sydney-modules.php

themes.trac.wordpress.org/...odules/class-sydney-modules.php

themes.trac.wordpress.org/changeset/288374/

cve.org (CVE-2025-8999)

nvd.nist.gov (CVE-2025-8999)

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