CVE-2026-15962
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk31th percentile - higher than 31% of all known CVEs
Summary
The Fluent Forms Pro Add On Pack plugin for WordPress up to version 6.2.6 is vulnerable to PHP Object Injection via deserialization of untrusted input. Authenticated attackers with Subscriber-level access or above can inject a PHP Object. The presence of a POP chain allows changing user passwords and potentially taking over administrator accounts. Exploitation is only possible if user update integration is enabled and a user meta field is mapped.
Risk Assessment
Risk of WordPress administrator account takeover via password changes. The attack requires authentication but can lead to full site compromise.
Recommendation
Update the Fluent Forms Pro Add On Pack plugin to the latest version. Disable user update integration if not needed.
Other vulnerabilities in Fluent Forms Pro Add On Pack
See all- CVE-2026-94675High
The Fluent Forms Pro Add On Pack plugin versions up to 6.2.13 contain an unauthenticated Cross Site Scripting (XSS) vulnerability. This means an attacker without logging in can inject malicious scripts into the page.
- CVE-2026-94669Medium
Missing Authorization vulnerability in WP ManageNinja LLC Fluent Forms Pro Add On Pack fluentformpro allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Fluent Forms Pro Add On Pack: from n/a through 6.2.13.
- CVE-2026-81297High
Subscriber Privilege Escalation in Fluent Forms Pro Add On Pack versions up to 6.2.12.
- CVE-2026-81296High
Unauthenticated Broken Access Control in Fluent Forms Pro Add On Pack versions up to 6.2.12.
- CVE-2026-66633High
Unauthenticated XSS vulnerability in Fluent Forms Pro Add On Pack versions prior to 6.2.12. An attacker can inject malicious scripts that execute in the victim's browser.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS