CVE-2024-4157: high-severity vulnerability in techjewel Fluent Forms – Customizable Contact…
Contact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder <= 5.1.15 - PHP Object Injection via extractDynamicValues
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.7%
The Contact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 5.1.15 via deserialization of untrusted input in the extractDynamicValues function. This makes it possible for authenticated attackers, with contributor-level access and above, to inject a PHP Object. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code. Successful exploitation requires the attacker to have "View Form" and "Manage Form" permissions, which must be explicitly set by an administrator. However, this requirement can be bypassed when this vulnerability is chained with CVE-2024-2771.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
techjewel · Fluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form BuilderRelated CVEs — techjewel Fluent Forms – Customizable Contact…
In the same product, most dangerous first.
CVE-2024-2771CRITICALContact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder <= 5.1.16 - Missing Authorization to Settings Update and Limited Privilege EscalationEPSS 2.9%CVE-2024-2782HIGHContact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder <= 5.1.16 - Missing Authorization to Setting ManipulationEPSS 1.2%CVE-2025-9260MEDIUMFluent Forms – Customizable Contact Forms, Survey, Quiz, & Conversational Form Builder 5.1.16 - 6.1.1 - Authenticated (Subscriber+) PHP Object Injection To Arbitrary File ReadEPSS 0.6%CVE-2026-6344MEDIUMFluent Forms <= 6.2.1 - Authenticated (Administrator+) Arbitrary File Read via Path Traversal in Email AttachmentEPSS 0.6%CVE-2024-0618MEDIUMFluent Forms <= 5.1.5 - Authenticated(Administrator+) Stored Cross-Site Scripting via imported form titleEPSS 0.5%CVE-2024-5053MEDIUMContact Form Plugin by Fluent Forms for Quiz, Survey, and Drag & Drop WP Form Builder <= 5.1.18 - Missing Authorization to Authenticated (Subscriber+) Mailchimp Integration ModificationEPSS 0.4%