Calculated Fields Form <= 5.5.1.3 - Reflected DOM-Based Cross-Site Scripting via 'x' URL Query Parameter via Text Area Predefined Value

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-100184
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-01 09:17:07 UTC
Updated2026-10-01 12:40:28 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 4.7 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

Problem Types: CWE-79 | CWE-79 CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary4.7MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
3.1CNADECLARED4.7MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Codepeople Calculated Fields Form AI Form Builder For WordPress Contact Payment Quote Quiz More affected 5.5.1.3 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/calculated-fields-form/tags/5.5.1.2/js/fields-public/... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/6f1d2fe6-6cee-4e21-85ac-37d2d... [email protected] www.wordfence.com
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/calculated-fields-form/tags/5.5.1.2/js/fbuilder-pro-p... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/calculated-fields-form/tags/5.5.1.2/js/fbuilder-pro-p... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/calculated-fields-form/tags/5.5.1.2/js/modules/08_url... [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: UKO (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-09-25T13:55:25.000ZVendor Notified
CNA2026-09-30T20:14:54.000ZDisclosed

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