CVE-2022-3861 HIGH

CVE-2022-3861: Betheme <= 26.5.1.4 - Authenticated (Subscriber+) PHP Object Injection

Vendor Muffingroup
Product Betheme
Weakness CWE-502 · Unsafe deserialization
Published November 21, 2022
Last update April 8, 2026
View on NVD All CVEs

CVSS base score

8.8/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

The Betheme theme for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 26.5.1.4 via deserialization of untrusted input supplied via the import, mfn-items-import-page, and mfn-items-import parameters passed through the mfn_builder_import, mfn_builder_import_page, importdata, importsinglepage, and importfromclipboard functions. This makes it possible for authenticated attackers, with subscriber level permissions and above to inject a PHP Object. The additional presence of a POP chain would make it possible for attackers to execute code, retrieve sensitive data, delete files, etc..

Key dates

02Disclosure timeline

November 21, 2022 CVE published
April 8, 2026 Record updated