The Feed Them Social – for Twitter feed, Youtube and more plugin for WordPress is vulnerable to deserialization of untrusted input via the 'fts_url' parameter in versions up to, and including 2.9.8.5. This makes it possible for unauthenticated attackers to call files using a PHAR wrapper that will deserialize the data and call arbitrary PHP Objects that can be used to perform a variety of malicious actions granted a POP chain is also present. It also requires that the attacker is successful in uploading a file with the serialized payload.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-2437
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2754749%40feed-them-social&new=2754749%40feed-them-social&sfp_email=&sfph_mail=
• https://www.wordfence.com/vulnerability-advisories/#CVE-2022-2437
• https://www.wordfence.com/threat-intel/vulnerabilities/id/50bcea94-b12a-4b31-b0c1-bba834ea9bd0?source=cve