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Plugin · formidable
formidable
23 known vulnerabilities on record. Add your version above to see which ones affect you.
Oct 21, 2026Formidable Forms: Does not verify the identity of the caller before recording the timestamp it uses to rate limit payment gateway verification requestsCVE-2026-85642 · fixed in 7.0 · reported by WPScanHigh 7.5
The Formidable Forms WordPress plugin before 7.0 does not verify the identity of the caller before recording the timestamp it uses to rate limit payment gateway verification requests, allowing unauthenticated attackers to consume the daily allowance and cause legitimate verification attempts to be refused for the next 24 hours.
Sep 16, 2026Formidable Forms: Does not prevent a request-derived value from reaching the WordPress shortcode parserCVE-2026-19857 · fixed in 6.35 · reported by WPScanMedium 4.8
The Formidable Forms WordPress plugin before 6.35 does not prevent a request-derived value from reaching the WordPress shortcode parser when it substitutes a supported token into a form's custom HTML, allowing unauthenticated visitors to have arbitrary shortcodes, with attacker-chosen attributes, executed server-side on any page displaying an affected form.
Sep 16, 2026Formidable Forms: Does not restrict who can set the identifier recordingCVE-2026-85641 · fixed in 6.35 · reported by WPScanMedium 4.3
The Formidable Forms WordPress plugin before 6.35 does not restrict who can set the identifier recording which user last edited a form entry, and relies on that identifier when deciding whether to strip HTML from stored entry values, allowing unauthenticated visitors to have markup rendered in the admin entry view that would otherwise be removed, and to attribute their submission to an administrator who never made it.
Aug 26, 2026Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More: Stored Cross-Site ScriptingCVE-2026-18331 · affects up to 6.33.1 · reported by WordfenceHigh 7.2
The Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'frm_user_id' parameter in all versions up to, and including, 6.33.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. By forging frm_user_id to match an administrator's user ID — discoverable via the public WordPress REST API — an unauthenticated attacker causes wp_kses_post() to serve as the only output filter, which preserves the injected payload structurally intact; the plugin's admin JavaScript then decodes and executes it automatically on page load.
NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Aug 6, 2026Formidable Forms: Does not properly validate the status of a PayPal subscription payment before marking it completeCVE-2026-11361 · fixed in 6.32.1 · reported by WPScanMedium 5.9
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 — such as digital content access, license delivery, and membership activation — without being charged.
Mar 13, 2026Formidable Forms: A payment integrity bypassCVE-2026-2890 · affects up to 6.28 · reported by WordfenceHigh 7.5
The Formidable Forms plugin for WordPress is vulnerable to a payment integrity bypass in all versions up to, and including, 6.28. This is due to the Stripe Link return handler (`handle_one_time_stripe_link_return_url`) marking payment records as complete based solely on the Stripe PaymentIntent status without comparing the intent's charged amount against the expected payment amount, and the `verify_intent()` function validating only client secret ownership without binding intents to specific forms or actions. This makes it possible for unauthenticated attackers to reuse a PaymentIntent from a completed low-value payment to mark a high-value payment as complete, effectively bypassing payment for goods or services.
NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Mar 13, 2026Formidable Forms: An authorization bypass through user-controlled keyCVE-2026-2888 · affects up to 6.28 · reported by WordfenceMedium 5.3
The Formidable Forms plugin for WordPress is vulnerable to an authorization bypass through user-controlled key in all versions up to, and including, 6.28. This is due to the `frm_strp_amount` AJAX handler (`update_intent_ajax`) overwriting the global `$_POST` data with attacker-controlled JSON input and then using those values to recalculate payment amounts via field shortcode resolution in `generate_false_entry()`. The handler relies on a nonce that is publicly exposed in the page's JavaScript (`frm_stripe_vars.nonce`), which provides CSRF protection but not authorization. This makes it possible for unauthenticated attackers to manipulate PaymentIntent amounts before payment completion on forms using dynamic pricing with field shortcodes, effectively paying a reduced amount for goods or services.
NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
Dec 13, 2024Formidable Forms: Missing AuthorizationCVE-2022-45806 · affects up to 5.5.4 · reported by PatchstackMedium 4.3
Missing Authorization vulnerability in Strategy11 Form Builder Team Formidable Forms allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Formidable Forms: from n/a through 5.5.4.
Nov 23, 2024Formidable Forms – Contact Form Plugin, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: POST-Based Reflected Cross-Site ScriptingCVE-2024-11188 · affects up to 6.16.1.2 · reported by WordfenceMedium 6.1
The Formidable Forms – Contact Form Plugin, Survey, Quiz, Payment, Calculator Form & Custom Form Builder plugin for WordPress is vulnerable to POST-Based Reflected Cross-Site Scripting via the Custom HTML Form parameters in all versions up to, and including, 6.16.1.2 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.
Nov 21, 2024Formidable Forms: Does not sanitise and escape some of its settingsCVE-2024-9768 · fixed in 6.14.1 · reported by WPScanMedium 4.8
The Formidable Forms WordPress plugin before 6.14.1 does not sanitise and escape some of its settings, which could allow high privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup).
Oct 16, 2024Formidable Form Builder: Sensitive Data ExposureCVE-2017-20194 · affects up to 2.05.03 · reported by WordfenceMedium 5.3
The Formidable Form Builder plugin for WordPress is vulnerable to Sensitive Data Exposure in versions up to, and including, 2.05.03 via the frm_forms_preview AJAX action. This makes it possible for unauthenticated attackers to export all of the form entries for a given form.
Oct 16, 2024Formidable Form Builder: Stored Cross-Site ScriptingCVE-2017-20192 · fixed in 2.05.03 · reported by WordfenceHigh 8.3
The Formidable Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple parameters submitted during form entries like 'after_html' in versions before 2.05.03 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute in a victim's browser.
Jul 31, 2024Formidable Forms – Contact Form Plugin, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Stored Cross-Site ScriptingCVE-2024-6725 · affects up to 6.11.1 · reported by WordfenceMedium 4.9
The Formidable Forms – Contact Form Plugin, Survey, Quiz, Payment, Calculator Form & Custom Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘html’ parameter in all versions up to, and including, 6.11.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with form editing permissions and Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
NVD recordplugins.trac.wordpress.orgplugins.trac.wordpress.org
May 17, 2024Formidable Forms: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)CVE-2024-23522 · affects up to 6.7 · reported by PatchstackMedium 5.3
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Strategy11 Form Builder Team Formidable Forms allows Code Injection.This issue affects Formidable Forms: from n/a through 6.7.
Feb 5, 2024Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Cross-Site Request ForgeryCVE-2024-0660 · affects up to 6.7.2 · reported by WordfenceMedium 6.1
The Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 6.7.2. This is due to missing or incorrect nonce validation on the update_settings function. This makes it possible for unauthenticated attackers to change form settings and add malicious JavaScript via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Jan 16, 2024Formidable Forms: Unserializes user inputCVE-2023-1405 · fixed in 6.2 · reported by WPScanHigh 7.5
The Formidable Forms WordPress plugin before 6.2 unserializes user input, which could allow anonymous users to perform PHP Object Injection when a suitable gadget is present.
Jan 9, 2024Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder: Stored Cross-Site ScriptingCVE-2023-6842 · affects up to 6.7 · reported by WordfenceMedium 4.4
The Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the name field label and description field label parameter in all versions up to 6.7 (inclusive) due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. By default, this only affects multi-site installations and installations where unfiltered_html has been disabled. However, in the formidable settings admins can extend form creation, deletion and other management permissions to other user types, which makes it possible for this vulnerability to be exploited by lower level user types as long as they have been granted the proper permissions.
Jan 9, 2024Formidable Forms: HTML injectionCVE-2023-6830 · affects up to 6.7 · reported by WordfenceMedium 6.5
The Formidable Forms plugin for WordPress is vulnerable to HTML injection in versions up to, and including, 6.7. This vulnerability allows unauthenticated users to inject arbitrary HTML code into form fields. When the form data is viewed by an administrator in the Entries View Page, the injected HTML code is rendered, potentially leading to admin area defacement or redirection to malicious websites. CVE-2024-23522 appears to be a duplicate of this issue.
Jun 27, 2023Formidable Forms: Does not adequately authorize the user or validate the plugin URL in its functionality for installing add-onsCVE-2023-2877 · fixed in 6.3.1 · reported by WPScanHigh 8.8
The Formidable Forms WordPress plugin before 6.3.1 does not adequately authorize the user or validate the plugin URL in its functionality for installing add-ons. This allows a user with a role as low as Subscriber to install and activate arbitrary plugins of arbitrary versions from the WordPress.org plugin repository onto the site, leading to Remote Code Execution.
Mar 27, 2023Formidable Forms: Uses several potentially untrusted headers to determine the IP address of the clientCVE-2023-0816 · fixed in 6.1 · reported by WPScanMedium 6.5
The Formidable Forms WordPress plugin before 6.1 uses several potentially untrusted headers to determine the IP address of the client, leading to IP Address spoofing and bypass of anti-spam protections.
Feb 28, 2023Cross-Site Request Forgery (CSRF) vulnerability in Strategy11 Form Builder Team Formidable Forms plugin <= 5.5.6 versions.CVE-2023-24419 · affects up to 5.5.6 · reported by PatchstackHigh 7.1
Cross-Site Request Forgery (CSRF) vulnerability in Strategy11 Form Builder Team Formidable Forms plugin <= 5.5.6 versions.
Oct 25, 2021Formidable Form Builder: Allows to inject certain HTML Tags like <audio>CVE-2021-24884 · fixed in 4.09.05 · reported by WPScanCritical 9.6
The Formidable Form Builder WordPress plugin before 4.09.05 allows to inject certain HTML Tags like <audio>,<video>,<img>,<a> and<button>.This could allow an unauthenticated, remote attacker to exploit a HTML-injection byinjecting a malicous link. The HTML-injection may trick authenticated users to follow the link. If the Link gets clicked, Javascript code can be executed. The vulnerability is due to insufficient sanitization of the "data-frmverify" tag for links in the web-based entry inspection page of affected systems. A successful exploitation incomibantion with CSRF could allow the attacker to perform arbitrary actions on an affected system with the privileges of the user. These actions include stealing the users account by changing their password or allowing attackers to submit their own code through an authenticated user resulting in Remote Code Execution. If an authenticated user who is able to edit Wordpress PHP Code in any kind, clicks the malicious link, PHP code can be edited.
Aug 29, 2019The formidable plugin before 4.02.01 for WordPress has unsafe deserialization.CVE-2019-15780 · fixed in 4.02.01 · reported by MITRECritical 9.8
The formidable plugin before 4.02.01 for WordPress has unsafe deserialization.
Versions are matched against the affected ranges published with each record. A plugin can ship a fix under its own numbering, so if something looks off, check the linked record. Want the whole site checked at once? Run the free website check.
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