WPForms Pro <= 2.0.0.2 - Unauthenticated Stored Cross-Site Scripting via Single Line Text and Paragraph Text Field Values
| CVE | CVE-2026-18409 |
|---|---|
| CVSS | 7.2 (High) |
| Publicly Published | August 20, 2026 |
| Last Updated | August 21, 2026 |
| Researcher |
daroo
|
Description
The WPForms Pro plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Single Line Text and Paragraph Text Field Values in all versions up to, and including, 2.0.0.2 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. The exploit relies on the plugin's own wp_kses_allowed_html filter widening the 'post' allowlist to permit iframe elements with a data-src attribute, which is not on WordPress's URI-attribute sanitization list, allowing a javascript: URI stored in data-src to survive kses processing and subsequently be promoted to a live src attribute by the bundled admin script view-entry.min.js.
Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.
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Vulnerability Details for WPForms Pro
| Software Type | Plugin |
|---|---|
| Software Slug | wpforms |
| Patched? | Yes |
| Remediation | Update to version 2.0.0.3, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in WPForms Pro
| # | Title | CVE ID | CVSS | Researchers | Date |
|---|---|---|---|---|---|
| 1 | WPForms Pro <= 1.10.1.1 - Unauthenticated Arbitrary File Write via Chunked Upload Init/Finalize Ordering | CVE-2026-10818 | lhking | July 24, 2026 | |
| 2 | WPForms Pro 1.8.4 - 1.8.5.3 - Unauthenticated Stored Cross-Site Scripting via Form Submission | CVE-2023-7063 | drop | January 19, 2024 | |
| 3 | Contact Form by WPForms (Free and Premium) <= 1.8.1.2 - Reflected Cross-Site Scripting | CVE-2023-30500 | Rafie Muhammad | June 20, 2023 | |
| 4 | WPForms Pro <= 1.7.6 - CSV Injection | CVE-2022-3574 | Francesco Carlucci | October 19, 2022 |
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