Vulnerability · Published Aug 16, 2026 · Assigned by Wordfence
CVE-2024-13784Contact Form, Survey, Quiz & Popup Form Builder – ARForms <= 1.8.5 - Unauthenticated PHP Object Injection
Critical 9.8
In plain English
A critical-severity unsafe deserialization in Contact Form, Survey, Quiz & Popup Form Builder – ARForms from reputeinfosystems. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 55% of all known vulnerabilities).
Official description
The Contact Form, Survey, Quiz & Popup Form Builder – ARForms plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 1.8.5 via deserialization of untrusted input from form submissions. This makes it possible for unauthenticated attackers to inject a PHP Object. No known POP chain is present in the vulnerable software, which means this vulnerability has no impact unless another plugin or theme containing a POP chain is installed on the site. If a POP chain is present via an additional plugin or theme installed on the target system, it may allow the attacker to perform actions like delete arbitrary files, retrieve sensitive data, or execute code depending on the POP chain present.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| reputeinfosystems | Contact Form, Survey, Quiz & Popup Form Builder – ARForms | 0 – through 1.8.5 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H