CVE-2022-3861

Name: CVE-2022-3861
Creator: NVD / NIST
Published: 2022-11-21T13:15:10.273+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.98%

Last modified Jun 17, 2026

CVE-2022-3861 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 1.98% chance of exploitation in the next 30 days.

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..

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.98%

78.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Muffingroup	Betheme	< 26.6

References

https://github.com/MrTuxracer/advisories/blob/master/CVEs/CVE-2022-3861.txtExploit, Third Party Advisory
https://muffingroup.com/betheme/Product
https://www.wordfence.com/threat-intel/vulnerabilities/id/f5e984d5-2537-4a4a-a071-084e0c1c3b5e?source=cve
https://www.wordfence.com/vulnerability-advisories-continued/#CVE-2022-3861Third Party Advisory
https://github.com/MrTuxracer/advisories/blob/master/CVEs/CVE-2022-3861.txtExploit, Third Party Advisory
https://muffingroup.com/betheme/Product
https://www.wordfence.com/vulnerability-advisories-continued/#CVE-2022-3861Third Party Advisory

Timeline

Published: Nov 21, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-3861?

How severe is CVE-2022-3861?

CVE-2022-3861 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.98% probability of exploitation in the next 30 days.

How do I fix CVE-2022-3861?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-3861?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST