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Vulnerability record · CVE-2026-18323 · published 25 August 2026

CVE-2026-18323: Cross-site scripting vulnerability

The Forminator Forms – Contact Form, Payment Form & Custom Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Radio Field (Save and Continue Draft) in all versions up to, and including, 1.57.0.2 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. This is exploitable because the Save-and-Continue draft submission AJAX endpoint is registered as nopriv, allowing unauthenticated attackers to bypass radio field option-membership validation and persist a crafted payload that, when rendered on the Submissions admin page, is auto-executed via the bundled Inputmask library's data-attribute callback binding.

7.2 CVSS 3.1 High EPSS 0.44% · top 64.2% CWE-79 · Cross-site scripting Deferred
7.2CVSS 3.1 base score
0.44%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
14References
26 Aug 2026Last modified by NVD

Description

The Forminator Forms – Contact Form, Payment Form & Custom Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Radio Field (Save and Continue Draft) in all versions up to, and including, 1.57.0.2 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. This is exploitable because the Save-and-Continue draft submission AJAX endpoint is registered as nopriv, allowing unauthenticated attackers to bypass radio field option-membership validation and persist a crafted payload that, when rendered on the Submissions admin page, is auto-executed via the bundled Inputmask library's data-attribute callback binding.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References

LinkTags
https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.1/admin/views/custom-form/entries/content-details.php#L2
https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.1/library/abstracts/abstract-class-front-action.php#L127
https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.1/library/fields/radio.php#L520
https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.1/library/helpers/helper-fields.php#L1053
https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.1/library/modules/custom-forms/front/front-action.php#L1
https://plugins.trac.wordpress.org/browser/forminator/tags/1.56.0/admin/views/custom-form/entries/content-details.php#L2
https://plugins.trac.wordpress.org/browser/forminator/tags/1.56.0/library/abstracts/abstract-class-front-action.php#L127
https://plugins.trac.wordpress.org/browser/forminator/tags/1.56.0/library/fields/radio.php#L520
https://plugins.trac.wordpress.org/browser/forminator/tags/1.56.0/library/helpers/helper-fields.php#L1053
https://plugins.trac.wordpress.org/browser/forminator/tags/1.56.0/library/modules/custom-forms/front/front-action.php#L1
https://plugins.trac.wordpress.org/changeset/3652725/forminator/trunk/admin/views/custom-form/entries/content-details.ph
https://plugins.trac.wordpress.org/changeset?old_path=%2Fforminator/tags/1.57.0.2&new_path=%2Fforminator/tags/1.57.0.3
https://plugins.trac.wordpress.org/changeset?reponame=&new=3652727%40forminator%2Ftags%2F1.57.0.3&old=3652717%40forminat
https://www.wordfence.com/threat-intel/vulnerabilities/id/85b02779-d85f-4700-9994-68391e69c1ea?source=cve

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Source: NIST National Vulnerability Database (record CVE-2026-18323), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.