WP Security CheckVulnerability data as of October 22, 2026

Known vulnerabilities in Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More

The most powerful drag and drop WordPress form builder for contact forms, payment forms, calculators, quizzes, surveys, and data-driven applications.

27Reported vulnerabilities
9.8Highest CVSS score
6.34Latest version
300,000+Active installs

What to do now

Update Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More to 6.35 or later. 27 of these have a fixed version available. Updating resolves them.

Plugin last updated: August 12, 2026 / Tested up to WordPress: 7.0.4 / View on wordpress.org

Reported vulnerabilities

Ordered by how urgently they need attention — whether a vulnerability is actually being exploited, and how likely exploitation is, rather than CVSS severity alone.

CVESeverityExploit probability
next 30 days		 Affected versionsFixed inPublished
CVE-2023-2877 High 8.8 22.5% Before 6.3.1 6.3.1 June 27, 2023
CVE-2021-24884 Critical 9.6 3.1% Before 4.09.05 4.09.05 October 25, 2021
CVE-2023-1405 High 7.5 0.7% Before 6.2 6.2 January 16, 2024
CVE-2019-15780 Critical 9.8 2.4% Before 4.02.01 4.02.01 August 29, 2019
CVE-2017-20192 Medium 6.1 1.1% Before 2.05.03 2.05.03 October 16, 2024
CVE-2023-0816 Medium 6.5 0.5% Before 6.1 6.1 March 27, 2023
CVE-2017-20194 Medium 5.3 1.1% Before 2.05.03 2.05.03 October 16, 2024
WF-faed1198-b8c4-46b1-b6a6-5fc35cd7bdf8 Critical 9.1 — 2.0.21 and earlier 2.0.22 February 16, 2016
CVE-2021-24608 Medium 4.8 0.7% Before 5.0.07 5.0.07 October 25, 2021
CVE-2014-9309 High 8.8 — 1.07.11 and earlier 2.0 January 26, 2016
WF-27616d9e-c1eb-489f-ace7-76c0e5be2597 High 8.6 — Before 2.05.03 2.05.03 November 13, 2017
CVE-2026-2890 High 7.5 0.5% 0 to 6.28 (inclusive) 6.29 March 13, 2026
CVE-2026-18331 High 7.2 0.4% 0 to 6.33.1 (inclusive) 6.34 August 26, 2026
CVE-2023-24419 High 7.1 0.3% 5.5.6 and earlier 5.5.7 February 1, 2023
CVE-2024-11188 Medium 6.1 0.4% 0 to 6.16.1.2 (inclusive) 6.16.2 November 23, 2024
CVE-2023-6830 Medium 6.1 0.4% 6.7 and earlier 6.7.1 January 9, 2024
WF-c0e6f20a-3a5c-4782-9852-9891b93d765f Medium 6.1 — Before 2.05.03 2.05.03 November 13, 2017
CVE-2026-11361 Medium 5.9 0.2% 0 up to (but not including) 6.32.1 6.32.1 August 6, 2026
CVE-2024-6725 Medium 5.4 0.4% 0 to 6.11.1 (inclusive) 6.11.2 July 31, 2024
CVE-2022-45806 Medium 5.4 0.5% 5.5.4 and earlier 5.5.5 December 16, 2022
CVE-2026-85641 Medium 5.3 0.1% 6.34 and earlier 6.35 September 14, 2026
CVE-2026-2888 Medium 5.3 0.5% 0 to 6.28 (inclusive) 6.29 March 13, 2026
CVE-2023-6842 Medium 4.8 0.3% 6.7 and earlier 6.7.1 January 9, 2024
CVE-2026-19857 Medium 4.8 0.2% 6.34 up to (but not including) 6.35 6.35 September 16, 2026
WF-f28feb11-7e28-4b97-b529-f6d266c3e534 Medium 4.7 — 5.5.4 and earlier 5.5.5 December 16, 2022
CVE-2024-9768 Medium 4.4 0.4% 6.14 and earlier 6.14.1 October 31, 2024
CVE-2024-0660 Medium 4.3 0.2% 6.7.2 and earlier 6.8 February 5, 2024

Sources: vulnerability records from NVD, exploitation from CISA KEV, exploit probability from EPSS. Affected versions come from CPE ranges or from the reporting CNA.