CVE-2026-15962: Fluent Forms Pro Add On Pack <= 6.2.6 - Authenticated (Subscriber+) PHP Object Injection to Arbitrary User Password Change via User Meta Field
The Fluent Forms Pro Add On Pack plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 6.2.6 via deserialization of untrusted input. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject a PHP Object. The additional presence of a POP chain allows attackers to change user passwords and potentially take over administrator accounts. Note: This can only be exploited if user update integration is enabled and a user meta field is mapped.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-15962?
The severity of CVE-2026-15962 is rated as high with a score of 8.8.
How do I fix CVE-2026-15962?
To fix CVE-2026-15962, upgrade the Fluent Forms Pro Add On Pack to version 6.2.7 or later.
What type of vulnerability is CVE-2026-15962?
CVE-2026-15962 is a PHP Object Injection vulnerability that allows authenticated attackers to exploit user meta fields.
Who is affected by CVE-2026-15962?
CVE-2026-15962 affects users of Fluent Forms Pro Add On Pack with Subscriber-level access and above.
What can an attacker do with CVE-2026-15962?
An attacker exploiting CVE-2026-15962 can change arbitrary user passwords through PHP Object Injection.