Formidable Forms <= 6.34 — Unauthenticated Content Injection
CVE-2026-85641Published · Updated Action summary
Affected: ≤6.34Update to 6.35 or newer
All remediation steps- Severity
- Medium5.3
- CVSS
- 5.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-20 Improper Input Validation
- Required access
- No account needed
- Exploit prediction (EPSS)
- 0.1% chance in 30 days3th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder formidable
- Affected≤ 6.34
- Patched in6.35
Update to 6.35 or newer.
You are affected if you run ≤ 6.34. Version 6.35 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder.
- 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
- Update to version 6.35, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Karthik Ramakrishnan.
The Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More plugin for WordPress is vulnerable to content injection in all versions up to, and including, 6.34. This makes it possible for unauthenticated attackers to inject HTML into an unintended field.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder
All 29| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High8.8 | Authenticated (Subscriber+) Arbitrary Plugin Installation via 'file_url' Parameter ≤6.35Update to 7.0 | CVE-2026-89435 | |
| High7.5 | Unauthenticated Denial of Service <7.0Update to 7.0 | CVE-2026-85642 | |
| Medium6.5 | Unauthenticated Arbitrary Shortcode Execution ≤6.34Update to 6.35 | CVE-2026-19857 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting via 'frm_user_id' Parameter ≤6.33.1Update to 6.34 | CVE-2026-18331 | |
| Medium5.3 | Unauthenticated Payment Bypass ≤6.32.0Update to 6.32.1 | CVE-2026-11361 |
- High8.8Authenticated (Subscriber+) Arbitrary Plugin Installation via 'file_url' Parameter
≤6.35Update to 7.0
- High7.5Unauthenticated Denial of Service
<7.0Update to 7.0
- Medium6.5Unauthenticated Arbitrary Shortcode Execution
≤6.34Update to 6.35
- High7.2Unauthenticated Stored Cross-Site Scripting via 'frm_user_id' Parameter
≤6.33.1Update to 6.34
- Medium5.3Unauthenticated Payment Bypass
≤6.32.0Update to 6.32.1
Timeline
CVE published
Severity medium, CVSS 5.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. 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.
- EPSS
- Exploit Prediction Scoring System by FIRST.org.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.