Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder vulnerabilities

Known security issues in the Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder WordPress plugin, by affected version, with severity, CVE and the version that fixes each one.

Plugin slug: formidable
Latest version: 7.0
Active installs: 300,000+
Known vulnerabilities: 39
Data updated: 2026-10-18 08:56 UTC

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This information comes from public vulnerability databases and may be incomplete or out of date. A plugin with no known vulnerabilities is not proof that it is secure; keep plugins updated and remove the ones you do not use.

Fixed in version 6.35 (2)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 6.35
Vulnerability	Severity	CVSS	Affected versions	Published
Formidable Forms <= 6.34 - Unauthenticated Arbitrary Shortcode Execution CVE-2026-19857 · Source	Medium	4.8	< 6.35	2026-09-14
Formidable Forms <= 6.34 - Unauthenticated Content Injection CVE-2026-85641 · Source	Not rated	-	< 6.35	2026-09-14

Fixed in version 6.34 (1)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 6.34
Vulnerability	Severity	CVSS	Affected versions	Published
Formidable Forms <= 6.33.1 - Unauthenticated Stored Cross-Site Scripting via 'frm_user_id' Parameter CVE-2026-18331 · Source	High	7.2	< 6.34	2026-06-25

Fixed in version 6.32.1 (1)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 6.32.1
Vulnerability	Severity	CVSS	Affected versions	Published
[en] The Formidable Forms WordPress plugin before 6.32.1 does not properly validate the status of a PayPal subscription payment before marking it complete, allowing unauthenticated users to bypass payment and trigger paid form actions — suc CVE-2026-11361 · Source	Medium	5.9	< 6.32.1	2026-08-06

Fixed in version 6.29 (2)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 6.29
Vulnerability	Severity	CVSS	Affected versions	Published
Formidable Forms <= 6.28 - Unauthenticated Payment Amount Manipulation via 'item_meta' Parameter CVE-2026-2888 · Source	Not rated	-	< 6.29	0000-00-00
Formidable Forms <= 6.28 - Missing Authorization to Unauthenticated Payment Integrity Bypass via PaymentIntent Reuse CVE-2026-2890 · Source	Not rated	-	< 6.29	0000-00-00

Fixed in version 6.16.2 (1)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 6.16.2
Vulnerability	Severity	CVSS	Affected versions	Published
Formidable Forms – Contact Form Plugin, Survey, Quiz, Payment, Calculator Form & Custom Form Builder <= 6.16.1.2 - Reflected Cross-Site Scripting via Custom HTML Form Parameter CVE-2024-11188 · Source	Medium	6.1	< 6.16.2	2024-11-22

Fixed in version 6.14.1 (1)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 6.14.1
Vulnerability	Severity	CVSS	Affected versions	Published
WordPress Formidable Forms Plugin < 6.14.1 is vulnerable to Cross Site Scripting (XSS) CVE-2024-9768 · Source	Medium	4.8	< 6.14.1	2024-10-31

Fixed in version 6.11.2 (1)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 6.11.2
Vulnerability	Severity	CVSS	Affected versions	Published
Formidable Forms <= 6.11.1 - Authenticated (Subscriber+) Stored Cross-Site Scripting CVE-2024-6725 · Source	Medium	5.4	< 6.11.2	2024-07-30

Fixed in version 6.8 (1)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 6.8
Vulnerability	Severity	CVSS	Affected versions	Published
Formidable Forms <= 6.7.2 - Cross-Site Request Forgery to Stored Cross-Site Scripting CVE-2024-0660 · Source	Medium	4.3	< 6.8	2024-01-26

Fixed in version 6.7.1 (3)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 6.7.1
Vulnerability	Severity	CVSS	Affected versions	Published
Formidable Forms <= 6.7 - HTML Injection CVE-2023-6830 · Source	Medium	6.1	< 6.7.1	2024-01-08
WordPress Formidable Forms Plugin <= 6.7 is vulnerable to Content Injection CVE-2024-23522 · Source	Medium	5.3	< 6.7.1	2024-05-17
Formidable Forms <= 6.7 - Authenticated (Administrator+) Stored Cross-Site Scripting CVE-2023-6842 · Source	Medium	4.8	< 6.7.1	2024-01-08

Fixed in version 6.3.1 (2)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 6.3.1
Vulnerability	Severity	CVSS	Affected versions	Published
Formidable Forms <= 6.3 - Authenticated (Subscriber+) Arbitrary Plugin Installation and Activation CVE-2023-2877 · Source	High	8.8	< 6.3.1	2023-05-31
WordPress Formidable Forms Plugin < 6.3.1 is vulnerable to Broken Access Control No CVE assigned · Source	Not rated	-	< 6.3.1	2023-06-01

Fixed in version 6.2 (1)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 6.2
Vulnerability	Severity	CVSS	Affected versions	Published
Formidable Forms <= 6.1.2 - Unauthenticated PHP Object Injection CVE-2023-1405 · Source	High	7.5	< 6.2	2023-04-06

Fixed in version 6.1 (1)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 6.1
Vulnerability	Severity	CVSS	Affected versions	Published
Formidable Forms <= 6.0.1 - IP Spoofing via HTTP header CVE-2023-0816 · Source	Medium	6.5	< 6.1	2023-03-06

Fixed in version 5.5.7 (1)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 5.5.7
Vulnerability	Severity	CVSS	Affected versions	Published
Formidable Form Builder <= 5.5.6 - Cross-Site Request Forgery CVE-2023-24419 · Source	High	7.1	< 5.5.7	2023-02-01

Fixed in version 5.5.5 (4)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 5.5.5
Vulnerability	Severity	CVSS	Affected versions	Published
Formidable Form Builder <= 5.5.4 - Cross-Site Request Forgery CVE-2022-45806 · Source	Medium	4.3	< 5.5.5	2022-12-16
WordPress Formidable Forms Plugin <= 5.5.4 is vulnerable to Server Side Request Forgery (SSRF) No CVE assigned · Source	Not rated	-	< 5.5.5	2022-12-21
WordPress Formidable Forms Plugin <= 5.5.4 is vulnerable to Cross Site Request Forgery (CSRF) No CVE assigned · Source	Not rated	-	< 5.5.5	2022-12-21
Formidable Forms <= 5.5.4 - Authenticated (Admin+) Server-Side Request Forgery No CVE assigned · Source	Not rated	-	< 5.5.5	2022-12-16

Fixed in version 5.0.07 (2)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 5.0.07
Vulnerability	Severity	CVSS	Affected versions	Published
Formidable Form Builder <= 5.0.06 - Admin+ Stored Cross-Site Scripting CVE-2021-24608 · Source	Medium	4.8	< 5.0.07	2021-10-06
WordPress Formidable Forms plugin <= 5.0.06 - Authenticated Stored Cross-Site Scripting (XSS) vulnerability CVE-2021-39330 · Source	Low	0.0	< 5.0.07	2021-10-13

Fixed in version 4.09.05 (1)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 4.09.05
Vulnerability	Severity	CVSS	Affected versions	Published
WordPress Formidable Form Builder plugin <= 4.09.04 - Stored Cross-Site Scripting (XSS) vulnerability CVE-2021-24884 · Source	Critical	9.6	< 4.09.05	2021-01-28

Fixed in version 4.02.01 (1)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 4.02.01
Vulnerability	Severity	CVSS	Affected versions	Published
WordPress Formidable Form Builder plugin <= 4.02 - Unsafe Deserialisation vulnerability CVE-2019-15780 · Source	Critical	9.8	< 4.02.01	2019-08-09

Fixed in version 2.05.03 (8)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 2.05.03
Vulnerability	Severity	CVSS	Affected versions	Published
Formidable Form Builder < 2.05.03 - Unauthenticated Stored Cross-Site Scripting CVE-2017-20192 · Source	High	8.3	< 2.05.03	2017-11-13
Formidable Form Builder < 2.05.03 - Unauthenticated Information Disclosure CVE-2017-20194 · Source	Medium	5.3	< 2.05.03	2017-11-12
WordPress Formidable Forms plugin <=2.05.02 - SQL Injection (SQLi) vulnerability No CVE assigned · Source	Not rated	-	< 2.05.03	2017-11-20
WordPress Formidable Forms plugin <=2.05.02 - Multiple Cross-Site Scripting (XSS) vulnerabilities No CVE assigned · Source	Not rated	-	< 2.05.03	2017-11-20
WordPress Formidable Forms plugin <=2.05.02 - Multiple vulnerabilities No CVE assigned · Source	Not rated	-	< 2.05.03	2017-11-20
Formidable Form Builder < 2.05.03 - SQL Injection No CVE assigned · Source	Not rated	-	< 2.05.03	2017-11-13
Formidable Form Builder < 2.05.03 - Reflected Cross-Site Scripting No CVE assigned · Source	Not rated	-	< 2.05.03	2017-11-13
Formidable Forms < 2.05.03 - Multiple Vulnerabilities No CVE assigned · Source	Not rated	-	< 2.05.03	-

Fixed in version 2.0.22 (1)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 2.0.22
Vulnerability	Severity	CVSS	Affected versions	Published
Formidable Form Builder <= 2.0.21 - Missing Authorization Checks No CVE assigned · Source	Not rated	-	< 2.0.22	2016-02-16

Fixed in version 2.0 (1)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 2.0
Vulnerability	Severity	CVSS	Affected versions	Published
WordPress Formidable Forms Plugin <= 1.07.11 - Blind SQL Injection CVE-2014-9309 · Source	Not rated	-	< 2.0	0000-00-00

Fixed in version 1.06.09 (1)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 1.06.09
Vulnerability	Severity	CVSS	Affected versions	Published
WordPress Formidable Forms Plugin <= 1.06.08 - Unspecified Vulnerabilities No CVE assigned · Source	Not rated	-	< 1.06.09	2016-01-29

Fixed in version 1.06.04 (1)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 1.06.04
Vulnerability	Severity	CVSS	Affected versions	Published
WordPress Formidable Forms Plugin <= 1.06.03 - Remote Code Execution No CVE assigned · Source	Not rated	-	< 1.06.04	2016-01-29

Fixed in version 1.06.03 (1)

Formidable Forms - Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Fixed in version 1.06.03
Vulnerability	Severity	CVSS	Affected versions	Published
Formidable Forms Pro < 1.06.03 - Arbitrary File Upload via ofc_upload_image.php CVE-2009-4140 · Source	Low	0.0	< 1.06.03	2009-12-22

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Sources and attribution

Vulnerability data from WPVulnerability (WordPress, plugins, themes and server software). WPVulnerability data license.
CVE records are copyright The MITRE Corporation. CVE Terms of Use.
Known-exploited status from the CISA Known Exploited Vulnerabilities catalog. Public domain (U.S. Government work).
Plugin names, latest versions and install counts from the WordPress.org plugin directory. WordPress is a trademark of the WordPress Foundation; Webforta is not affiliated with or endorsed by WordPress.org, WPVulnerability or the sources above.