Software intelligence
Important: Formidable appearing in this catalog does not mean your website is affected. Exposure depends on your installed version. How SiteRespond intelligence works
Tracked advisories
25
Latest advisory
25 August 2026
CISA KEV matches
0
In this WordPress feed
WordPress slug
formidable
Plugin
This catalog lists 25 known advisories affecting Formidable. The most recent was published on 25 August 2026. If you use this software, compare your installed version against the affected ranges on each advisory and update to a fixed release outside those ranges. SiteRespond Defence checks your actual installed version when the plugin is connected — listing here does not by itself mean your site is vulnerable.
Formidable Forms <= 6.33.1 - Unauthenticated Stored Cross-Site Scripting via 'frm_user_id' Parameter
May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Published 25 August 2026
Formidable Forms <= 6.32.0 - Unauthenticated Payment Bypass
This advisory describes a other issue in the affected software. Review the source advisory and your installed version to assess exposure.
Published 25 June 2026
Formidable Forms <= 6.28 - Unauthenticated Payment Amount Manipulation via 'item_meta' Parameter
This advisory describes a other issue in the affected software. Review the source advisory and your installed version to assess exposure.
Published 12 March 2026
Known Formidable advisories published by month.
No CVE assigned · Published 16 December 2022
Affected versions: ≤ 5.5.4
CVE-2021-24608 · Published 6 October 2021
Affected versions: < 5.0.07
CVE-2021-24884 · Published 28 January 2021
Affected versions: < 4.09.05
CVE-2019-15780 · Published 9 August 2019
Affected versions: < 4.02.01
No CVE assigned · Published 13 November 2017
Affected versions: < 2.05.03
No CVE assigned · Published 13 November 2017
Affected versions: < 2.05.03
CVE-2017-20192 · Published 13 November 2017
Affected versions: < 2.05.03
CVE-2017-20194 · Published 12 November 2017
Affected versions: < 2.05.03
No CVE assigned · Published 16 February 2016
Affected versions: ≤ 2.0.21
CVE-2014-9309 · Published 26 January 2016
Affected versions: ≤ 1.07.11
SiteRespond Defence matches your installed Formidable version against this catalog when the Defence plugin is connected to your WordPress site.