CVE-2026-103909Calculated Fields Form <= 5.5.1.5 - Reflected DOM-Based Cross-Site Scripting via URL Parameter Substitution in Calculated Field Equation
Updated under an hour ago ()
Does this affect you?
It affects codepeople Calculated Fields Form – AI Form Builder for WordPress – Contact, Payment, Quote, Quiz & More. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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 'arbitrary (whichever names the admin bound via url.<name>)' parameter in all versions up to, and including, 5.5.1.5 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 the targeted site to host a publicly accessible form in which an administrator has configured at least two fields with url.<name> predefined values that are used together in a concatenation equation — a plausible but not universal configuration.
- CVSS
- 6.1 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Oct 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
codepeople Calculated Fields Form – AI Form Builder for WordPress – Contact, Payment, Quote, Quiz & More codepeople:calculated_fields_form_ai_form_builder_for_wordpress_contact_payment_quote_quiz_and_more (from the name) | through 5.5.1.5 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/fd61aa6f-79c5-4f81-964e-e71412d45b35?source=cve
- https://plugins.trac.wordpress.org/browser/calculated-fields-form/tags/5.5.1.5/js/fields-public/fbuilder.fcalculated.js#L416
- https://plugins.trac.wordpress.org/browser/calculated-fields-form/tags/5.5.1.5/js/fields-public/fbuilder.fcalculated.js#L389
- https://plugins.trac.wordpress.org/browser/calculated-fields-form/tags/5.5.1.5/js/fbuilder-pro-public.jquery.js#L167
- https://plugins.trac.wordpress.org/browser/calculated-fields-form/tags/5.5.1.5/js/fbuilder-pro-public.jquery.js#L1288
- https://plugins.trac.wordpress.org/browser/calculated-fields-form/tags/5.5.1.5/js/modules/08_url/public/01_url.js#L140
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3724009%40calculated-fields-form&new=3724009%40calculated-fields-form
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.