CVE-2022-3861: muffingroup betheme Deserialization of Untrusted Data

Vulnerability summary

CVE-2022-3861 is a high (CVSS 8.8) Deserialization of Untrusted Data vulnerability in muffingroup betheme. EPSS estimates a 2.17% chance of exploitation in the next 30 days, higher than 82% of scored vulnerabilities. 1 public exploit is recorded. Fixed in 26.6.

Timeline

1. 21-11-2022
   PublishedVulnerability first disclosed.
2. 08-04-2026
   Last modifiedVulnerability information updated.

Description

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..

• CWE-502Deserialization of Untrusted DataThe product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.