CVE-2026-100184 json
Calculated Fields Form <= 5.5.1.3 - Reflected DOM-Based Cross-Site Scripting via 'x' URL Query Parameter via Text Area Predefined Value
published last mo. modified last mo. also EUVD-2026-90570
- cvss
- 4.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 9%
- public exploits
- 0
- none known
Summary
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.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.20% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N |
Affected products
- codepeople Calculated Fields Form – AI Form Builder for WordPress – Contact, Payment, Quote, Quiz & More
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/6f1d2fe6-6cee-4e21-85ac-37d2d48156d2?source=cve
- plugins.trac.wordpress.org /browser/calculated-fields-form/tags/5.5.1.2/js/fbuilder-pro-public.jquery.js#L692
- plugins.trac.wordpress.org /browser/calculated-fields-form/tags/5.5.1.2/js/fields-public/05_fbuilder.ftextarea.js#L23
- plugins.trac.wordpress.org /browser/calculated-fields-form/tags/5.5.1.2/js/fbuilder-pro-public.jquery.js#L1288
- plugins.trac.wordpress.org /browser/calculated-fields-form/tags/5.5.1.2/js/modules/08_url/public/01_url.js#L140
- plugins.trac.wordpress.org /changeset?reponame=&old=3713574%40calculated-fields-form&new=3713574%40calculated-fields-form
Sources
- CVE List CVE-2026-100184
- NVD CVE-2026-100184
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.