CVE-2026-100184
MediumCVSS 4.7Summary
The Calculated Fields Form plugin for WordPress up to version 5.5.1.3 is vulnerable to Reflected DOM-Based XSS via the 'x' parameter (attacker-chosen name matching the form's url.<name> predefined value). Insufficient input sanitization and output escaping allow unauthenticated attackers to inject arbitrary scripts that execute when a user clicks a crafted link. Exploitation requires a Text Area field with 'url.<name>' Predefined Value and predefinedClick disabled.
Risk Assessment
The risk involves execution of malicious scripts in the victim's browser, potentially leading to session theft, account takeover, or content manipulation. The attack requires user interaction but can affect any visitor to a vulnerable form.
Recommendation
Update the Calculated Fields Form plugin to the latest patched version. Additionally, consider changing form configurations to avoid using 'url.<name>' as Predefined Value if not necessary.
Other vulnerabilities in Calculated Fields Form
See all- CVE-2026-100179Medium
The Calculated Fields Form plugin for WordPress up to version 5.5.1.3 is vulnerable to Reflected DOM-Based XSS via the 'x' parameter (any URL parameter consumed by the form's calculated equation). Insufficient input sanitization and output escaping allow unauthenticated attackers to inject arbitrary scripts that execute when a user clicks a crafted link. Exploitation requires a public form with a Select2 dropdown populated via a calculated equation using GETURLPARAMETER() and setChoices().
- CVE-2026-95529High
The Calculated Fields Form plugin in versions up to and including 5.5.1.1 contains an unauthenticated Cross Site Scripting (XSS) vulnerability. An unauthenticated attacker can inject malicious script into the page.
Original NVD description (English source)
The Calculated Fields Form – AI Form Builder for WordPress – Contact, Payment, Quote, Quiz & More plugin for WordPress is vulnerable to Reflected DOM-Based Cross-Site Scripting via the 'x (attacker-chosen name matching the form's url.<name> predefined value)' parameter in all versions up to, and including, 5.5.1.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. Exploitation requires that the targeted form has a Text Area field configured with a 'url.<name>' Predefined Value and predefinedClick disabled, which is a documented and commonly used plugin feature.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS