CVE-2026-18325Forminator Forms <= 1.56.1 - Unauthenticated Stored Cross-Site Scripting via Forged Upload Record via Select Field
Updated under an hour ago ()
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It affects wpmudev Forminator Forms – Contact Form, Payment Form & Custom Form Builder. Add what you run to find out whether that includes you.
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The Forminator Forms – Contact Form, Payment Form & Custom Form Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Forged Upload Record via Select Field in all versions up to, and including, 1.56.1 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. The exploit is possible because Forminator_Core::sanitize_array() skips all filtering for keys prefixed with 'select-', and set_field_data() treats a submitted 'return' member as a trusted internal flag — allowing an unauthenticated attacker to forge and persist a complete upload field record with an arbitrary file_url value without any sanitization or validation.
- CVSS
- 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Aug 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
wpmudev Forminator Forms – Contact Form, Payment Form & Custom Form Builder wpmudev:forminator_forms_contact_form_payment_form_and_custom_form_builder (from the name) | through 1.56.1 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/fd9a81eb-2211-42e9-a456-fb60f3ca2c0f?source=cve
- https://plugins.trac.wordpress.org/browser/forminator/tags/1.56.0/library/model/class-form-entry-model.php#L1569
- https://plugins.trac.wordpress.org/browser/forminator/tags/1.56.0/library/modules/custom-forms/front/front-action.php#L1091
- https://plugins.trac.wordpress.org/browser/forminator/tags/1.56.0/library/class-core.php#L616
- 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/1.55.1/library/model/class-form-entry-model.php#L1569
- https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.1/library/modules/custom-forms/front/front-action.php#L1091
- https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.1/library/class-core.php#L616
- https://plugins.trac.wordpress.org/browser/forminator/tags/1.55.1/library/abstracts/abstract-class-front-action.php#L127
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3628716%40forminator%2Ftrunk&old=3628530%40forminator%2Ftrunk
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.