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

CVE-2026-100184Published · Updated

Action summary

Affected: ≤5.5.1.3Update to 5.5.1.4 or newer

All remediation steps
Watch plugin
Severity
Medium4.7
CVSS
4.7
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:H Attack complexity
High
PR:N Privileges required
None
UI:R User interaction
Required
S:C Scope
Changed
C:L Confidentiality
Low
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-79 Cross-Site Scripting
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

Calculated Fields Form – AI Form Builder for WordPress – Contact, Payment, Quote, Quiz & More calculated-fields-form

  1. Affected≤ 5.5.1.3
  2. Patched in5.5.1.4

Update to 5.5.1.4 or newer.

You are affected if you run ≤ 5.5.1.3. Version 5.5.1.4 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Calculated Fields Form – AI Form Builder for WordPress – Contact, Payment, Quote, Quiz & More.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 5.5.1.4, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch Calculated Fields Form – AI Form Builder for WordPress – Contact, Payment, Quote, Quiz & More to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to UKO.

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.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in Calculated Fields Form – AI Form Builder for WordPress – Contact, Payment, Quote, Quiz & More

All 23
More vulnerabilities in Calculated Fields Form – AI Form Builder for WordPress – Contact, Payment, Quote, Quiz & More
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting
≤5.5.2.8Update to 5.5.2.9
CVE-2026-124253
Medium6.1Reflected DOM-Based Cross-Site Scripting via URL Parameter Substitution in Calculated Field Equation
≤5.5.1.5Update to 5.5.1.6
CVE-2026-103909
Medium6.1Reflected DOM-Based Cross-Site Scripting via 'x' URL Parameter via setChoices()
≤5.5.1.3Update to 5.5.1.4
CVE-2026-100179
High7.2Unauthenticated Stored Cross-Site Scripting
≤5.5.1.1Update to 5.5.1.2
CVE-2026-95529
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via Form Settings
≤5.4.5.0Update to 5.4.5.1
CVE-2026-3986

Same weakness (Cross-Site Scripting)

All Cross-Site Scripting
Other Cross-Site Scripting vulnerabilities
SeverityVulnerabilityCVEPublished
High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup≤5.25.25Update to 5.26.45
CVE-2026-120688
Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder≤1.0.2Update to 1.1
CVE-2026-125055
Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System≤3.3.9Update to 3.4.0
CVE-2026-119077
Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce≤5.127.0Update to 5.128.0
CVE-2026-121518

Timeline

  1. CVE published

    Severity medium, CVSS 4.7

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
CVE® identifiers
[object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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