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Formidable Forms

40known security flaws found in Formidable Forms
since December 2009

Safe from 7.0

Version 7.0 or later fixes all of them. A site on an older version is open to them.

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When they were found.

Advisory: Running code, December 2009Advisory: Database injection, January 2016Advisory: Running code, January 2016Advisory: a security flaw, January 2016Advisory: Missing checks, February 2016Minor: Information leak, November 2017Advisory: Database injection, November 2017Major: Cross-site scripting, November 2017Advisory: Cross-site scripting, November 2017Advisory: Database injection, November 2017Advisory: Cross-site scripting, November 2017Advisory: a security flaw, November 2017Dangerous: Running code, August 2019Dangerous: Cross-site scripting, January 2021Minor: Cross-site scripting, October 2021Advisory: Cross-site scripting, October 2021Minor: Missing checks, December 2022Advisory: Server side request forgery, December 2022Advisory: Server side request forgery, December 2022Advisory: Forged requests, December 2022Major: Forged requests, February 2023Minor: Missing checks, March 2023Major: Running code, April 2023Major: Missing checks, May 2023Advisory: Missing checks, June 2023Minor: Cross-site scripting, January 2024Minor: Cross-site scripting, January 2024Minor: Forged requests, January 2024Minor: Cross-site scripting, May 2024Minor: Cross-site scripting, July 2024Minor: Cross-site scripting, October 2024Minor: Cross-site scripting, November 2024Advisory: Forged requests, March 2026Advisory: a security flaw, March 2026Major: Cross-site scripting, June 2026Minor: a security flaw, August 2026Minor: a security flaw, September 2026Advisory: a security flaw, September 2026Advisory: Knocking it over, September 2026200920122015201820212024

DangerousMajorMinorAdvisory

What they could let someone do.

What could happen

  • Cross-site scripting

    Someone could make your pages run their own script in visitors' browsers, to steal logins, show a fake payment form or send people to a scam site.

    How: The software puts text it was sent back onto a page without making it safe first, so a script hidden in a link, form or comment runs as if it were part of your site.

    Read about it here
  • Running code

    Someone could run their own code on the server and take the site over: add malware, send spam, steal data, or use it to attack others.

    How: Part of the software treats something it was sent as instructions to follow, or keeps an uploaded file somewhere it can be run.

    Read about it here
  • Missing checks

    Someone could do things only an administrator should: change settings, see private data, or give themselves more rights.

    How: Part of the software forgets to check who is asking before it does what was asked.

    Read about it here
Every known flaw, newest first (40)
  1. September 2026MinorA security flawFixed in 6.35. No login needed.
  2. September 2026AdvisoryA security flawFixed in 6.35. No login needed.
  3. September 2026AdvisoryKnocking it overFixed in 7.0. No login needed.
  4. August 2026MinorA security flawFixed in 6.32.1. No login needed.
  5. June 2026MajorCross-site scriptingFixed in 6.34. No login needed.
  6. March 2026AdvisoryForged requestsFixed in 6.29. No login needed.
  7. March 2026AdvisoryA security flawFixed in 6.29. No login needed.
  8. November 2024MinorCross-site scriptingFixed in 6.16.2. No login needed.
  9. October 2024MinorCross-site scriptingFixed in 6.14.1. Needs a login on the site.
  10. July 2024MinorCross-site scriptingFixed in 6.11.2. Needs a login on the site (Subscriber+).
  11. May 2024MinorCross-site scriptingFixed in 6.7.1. No login needed.
  12. January 2024MinorForged requestsFixed in 6.8. No login needed.
  13. January 2024MinorCross-site scriptingFixed in 6.7.1. Needs a login on the site (Administrator+).
  14. January 2024MinorCross-site scriptingFixed in 6.7.1. No login needed.
  15. June 2023AdvisoryMissing checksFixed in 6.3.1.
  16. May 2023MajorMissing checksFixed in 6.3.1. Needs a login on the site (Subscriber+).
  17. April 2023MajorRunning codeFixed in 6.2. No login needed.
  18. March 2023MinorMissing checksFixed in 6.1. No login needed.
  19. February 2023MajorForged requestsFixed in 5.5.7. No login needed.
  20. December 2022AdvisoryServer side request forgeryFixed in 5.5.5.
  21. December 2022AdvisoryForged requestsFixed in 5.5.5.
  22. December 2022MinorMissing checksFixed in 5.5.5. No login needed.
  23. December 2022AdvisoryServer side request forgeryFixed in 5.5.5. Needs a login on the site (Admin+).
  24. October 2021AdvisoryCross-site scriptingFixed in 5.0.07.
  25. October 2021MinorCross-site scriptingFixed in 5.0.07. Needs a login on the site.
  26. January 2021DangerousCross-site scriptingFixed in 4.09.05. No login needed.
  27. August 2019DangerousRunning codeFixed in 4.02.01. No login needed.
  28. November 2017AdvisoryDatabase injectionFixed in 2.05.03.
  29. November 2017AdvisoryCross-site scriptingFixed in 2.05.03.
  30. November 2017AdvisoryA security flawFixed in 2.05.03.
  31. November 2017AdvisoryDatabase injectionFixed in 2.05.03.
  32. November 2017MajorCross-site scriptingFixed in 2.05.03. No login needed.
  33. November 2017AdvisoryCross-site scriptingFixed in 2.05.03.
  34. November 2017MinorInformation leakFixed in 2.05.03. No login needed.
  35. February 2016AdvisoryMissing checksFixed in 2.0.22.
  36. January 2016AdvisoryRunning codeFixed in 1.06.04.
  37. January 2016AdvisoryA security flawFixed in 1.06.09.
  38. January 2016AdvisoryDatabase injectionFixed in 2.0.
  39. December 2009AdvisoryRunning codeFixed in 1.06.03.
  40. Date not knownAdvisoryDatabase injectionFixed in 2.05.03.

From the public lists of known flaws, checked daily. A flaw is listed once it is made public, often after a fix is out.

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