Formidable Forms: known security problems
29 known security problems reported for this WordPress plugin, with the affected versions, the fix and what to do.
Updated
In short
There are 29 known security problems on this page. Each one has a fixed version. Updating to version 7.0 or newer covers every fixed problem listed here.
Based on public reports. Check the plugin’s changelog. Watchfox AI may be wrong.
Get an email when your site is affected: install Watchfox AI (free)
Anyone with an account on your site, even a basic one could use it to harm your site (up to and including 6.35)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.35
- Fixed in
- 7.0
- What to do
- If your site has an affected version, update Formidable Forms to version 7.0 or newer.
- Official ID
- CVE-2026-89435
- Report title
- Formidable Forms <= 6.35 - Authenticated (Subscriber+) Arbitrary Plugin Installation via 'file_url' Parameter
- First reported
- Sources
- Wordfence, seen
A stranger could slow down or crash your site
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 7.0
- Fixed in
- 7.0
- What to do
- If your site has an affected version, update Formidable Forms to version 7.0 or newer.
- Official ID
- CVE-2026-85642
- Report title
- Formidable Forms – Contact Form, Survey, Quiz, Payment, Calculator Form & Custom Form Builder < 7.0 - Unauthenticated Denial of Service
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (up to and including 6.34)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.34
- Fixed in
- 6.35
- What to do
- If your site has an affected version, update Formidable Forms to version 6.35 or newer.
- Official ID
- CVE-2026-85641
- Report title
- Formidable Forms <= 6.34 - Unauthenticated Content Injection
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (up to and including 6.34) (2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.34
- Fixed in
- 6.35
- What to do
- If your site has an affected version, update Formidable Forms to version 6.35 or newer.
- Official ID
- CVE-2026-19857
- Report title
- Formidable Forms <= 6.34 - Unauthenticated Arbitrary Shortcode Execution
- First reported
- Sources
- Wordfence, seen
A stranger could plant harmful code that runs for your visitors or admins (up to and including 6.33.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.33.1
- Fixed in
- 6.34
- What to do
- If your site has an affected version, update Formidable Forms to version 6.34 or newer.
- Official ID
- CVE-2026-18331
- Report title
- Formidable Forms <= 6.33.1 - Unauthenticated Stored Cross-Site Scripting via 'frm_user_id' Parameter
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (up to and including 6.32.0)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.32.0
- Fixed in
- 6.32.1
- What to do
- If your site has an affected version, update Formidable Forms to version 6.32.1 or newer.
- Official ID
- CVE-2026-11361
- Report title
- Formidable Forms <= 6.32.0 - Unauthenticated Payment Bypass
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (up to and including 6.28)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.28
- Fixed in
- 6.29
- What to do
- If your site has an affected version, update Formidable Forms to version 6.29 or newer.
- Official ID
- CVE-2026-2888
- Report title
- Formidable Forms <= 6.28 - Unauthenticated Payment Amount Manipulation via 'item_meta' Parameter
- First reported
- Sources
- Wordfence, seen
A stranger could do things on your site they should not be allowed to
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.28
- Fixed in
- 6.29
- What to do
- If your site has an affected version, update Formidable Forms to version 6.29 or newer.
- Official ID
- CVE-2026-2890
- Report title
- Formidable Forms <= 6.28 - Missing Authorization to Unauthenticated Payment Integrity Bypass via PaymentIntent Reuse
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (up to and including 6.16.1.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.16.1.2
- Fixed in
- 6.16.2
- What to do
- If your site has an affected version, update Formidable Forms to version 6.16.2 or newer.
- Official ID
- CVE-2024-11188
- Report title
- 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
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (up to and including 6.14)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.14
- Fixed in
- 6.14.1
- What to do
- If your site has an affected version, update Formidable Forms to version 6.14.1 or newer.
- Official ID
- CVE-2024-9768
- Report title
- Formidable Forms – Contact Form Plugin, Survey, Quiz, Payment, Calculator Form & Custom Form Builder <= 6.14 - Authenticated (Admin+) Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Anyone with an account on your site, even a basic one could plant harmful code that runs for your visitors or admins
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.11.1
- Fixed in
- 6.11.2
- What to do
- If your site has an affected version, update Formidable Forms to version 6.11.2 or newer.
- Official ID
- CVE-2024-6725
- Report title
- Formidable Forms <= 6.11.1 - Authenticated (Subscriber+) Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (up to and including 6.7.2)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.7.2
- Fixed in
- 6.8
- What to do
- If your site has an affected version, update Formidable Forms to version 6.8 or newer.
- Official ID
- CVE-2024-0660
- Report title
- Formidable Forms <= 6.7.2 - Cross-Site Request Forgery to Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone who already has an admin account could plant harmful code that runs for your visitors or admins
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.7
- Fixed in
- 6.7.1
- What to do
- If your site has an affected version, update Formidable Forms to version 6.7.1 or newer.
- Official ID
- CVE-2023-6842
- Report title
- Formidable Forms <= 6.7 - Authenticated (Administrator+) Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone could use it to harm your site (up to and including 6.7)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.7
- Fixed in
- 6.7.1
- What to do
- If your site has an affected version, update Formidable Forms to version 6.7.1 or newer.
- Official ID
- CVE-2023-6830
- Report title
- Formidable Forms <= 6.7 - HTML Injection
- First reported
- Sources
- Wordfence, seen
Anyone with an account on your site, even a basic one could use it to harm your site (before 6.3.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 6.3.1
- Fixed in
- 6.3.1
- What to do
- If your site has an affected version, update Formidable Forms to version 6.3.1 or newer.
- Official ID
- CVE-2023-2877
- Report title
- Formidable Forms <= 6.3 - Authenticated (Subscriber+) Arbitrary Plugin Installation and Activation
- First reported
- Sources
- Wordfence, seen
A stranger could in some setups, take over your site
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.1.2
- Fixed in
- 6.2
- What to do
- If your site has an affected version, update Formidable Forms to version 6.2 or newer.
- Official ID
- CVE-2023-1405
- Report title
- Formidable Forms <= 6.1.2 - Unauthenticated PHP Object Injection
- First reported
- Sources
- Wordfence, seen
Someone could use it to harm your site (up to and including 6.0.1)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 6.0.1
- Fixed in
- 6.1
- What to do
- If your site has an affected version, update Formidable Forms to version 6.1 or newer.
- Official ID
- CVE-2023-0816
- Report title
- Formidable Forms <= 6.0.1 - IP Spoofing via HTTP header
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 5.5.6)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.5.6
- Fixed in
- 5.5.7
- What to do
- If your site has an affected version, update Formidable Forms to version 5.5.7 or newer.
- Official ID
- CVE-2023-24419
- Report title
- Formidable Form Builder <= 5.5.6 - Cross-Site Request Forgery
- First reported
- Sources
- Wordfence, seen
Someone could trick a logged-in admin into changing settings without knowing (up to and including 5.5.4)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.5.4
- Fixed in
- 5.5.5
- What to do
- If your site has an affected version, update Formidable Forms to version 5.5.5 or newer.
- Official ID
- CVE-2022-45806
- Report title
- Formidable Form Builder <= 5.5.4 - Cross-Site Request Forgery
- First reported
- Sources
- Wordfence, seen
Someone could make your server visit other addresses on their behalf
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 5.5.4
- Fixed in
- 5.5.5
- What to do
- If your site has an affected version, update Formidable Forms to version 5.5.5 or newer.
- Report title
- Formidable Forms <= 5.5.4 - Authenticated (Admin+) Server-Side Request Forgery
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (before 5.0.07)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 5.0.07
- Fixed in
- 5.0.07
- What to do
- If your site has an affected version, update Formidable Forms to version 5.0.07 or newer.
- Official ID
- CVE-2021-24608
- Report title
- Formidable Form Builder <= 5.0.06 - Admin+ Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
A stranger could plant harmful code that runs for your visitors or admins (before 4.09.05)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 4.09.05
- Fixed in
- 4.09.05
- What to do
- If your site has an affected version, update Formidable Forms to version 4.09.05 or newer.
- Official ID
- CVE-2021-24884
- Report title
- Formidable Form Builder <= 4.09.04 - Unauthenticated Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone could in some setups, take over your site
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 4.02.01
- Fixed in
- 4.02.01
- What to do
- If your site has an affected version, update Formidable Forms to version 4.02.01 or newer.
- Official ID
- CVE-2019-15780
- Report title
- Formidable Form Builder <= 4.02 - PHP Object Injection
- First reported
- Sources
- Wordfence, seen
Someone could read or change the data in your site’s database (before 2.05.03)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 2.05.03
- Fixed in
- 2.05.03
- What to do
- If your site has an affected version, update Formidable Forms to version 2.05.03 or newer.
- Report title
- Formidable Form Builder < 2.05.03 - SQL Injection
- First reported
- Sources
- Wordfence, seen
A stranger could plant harmful code that runs for your visitors or admins (before 2.05.03)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 2.05.03
- Fixed in
- 2.05.03
- What to do
- If your site has an affected version, update Formidable Forms to version 2.05.03 or newer.
- Official ID
- CVE-2017-20192
- Report title
- Formidable Form Builder < 2.05.03 - Unauthenticated Stored Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
Someone could plant harmful code that runs for your visitors or admins (before 2.05.03)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 2.05.03
- Fixed in
- 2.05.03
- What to do
- If your site has an affected version, update Formidable Forms to version 2.05.03 or newer.
- Report title
- Formidable Form Builder < 2.05.03 - Reflected Cross-Site Scripting
- First reported
- Sources
- Wordfence, seen
A stranger could use it to harm your site (before 2.05.03)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Before 2.05.03
- Fixed in
- 2.05.03
- What to do
- If your site has an affected version, update Formidable Forms to version 2.05.03 or newer.
- Official ID
- CVE-2017-20194
- Report title
- Formidable Form Builder < 2.05.03 - Unauthenticated Information Disclosure
- First reported
- Sources
- Wordfence, seen
Someone could do things on your site they should not be allowed to
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 2.0.21
- Fixed in
- 2.0.22
- What to do
- If your site has an affected version, update Formidable Forms to version 2.0.22 or newer.
- Report title
- Formidable Form Builder <= 2.0.21 - Missing Authorization Checks
- First reported
- Sources
- Wordfence, seen
Someone could read or change the data in your site’s database (up to and including 1.07.11)
A trusted security source confirmed it. If your site has an affected version, fix it this week.
- Affected versions
- Up to and including 1.07.11
- Fixed in
- 2.0
- What to do
- If your site has an affected version, update Formidable Forms to version 2.0 or newer.
- Official ID
- CVE-2014-9309
- Report title
- Formidable Form Builder <= 1.07.11 - SQL Injection
- First reported
- Sources
- Wordfence, seen
Where this comes from
We collect these reports from public security sources and rewrite them in plain words. Each problem shows its sources and the date we first saw it. This page never says whether your own site is affected: only a check of your site’s versions can tell.
Get an email when your site is affected.
Install Watchfox AI once. It checks your plugins and themes against this list every day, for free.
Install Watchfox AI (free)