CVE-2026-96567CWE-79cross-site-scripting

CVE-2026-96567

High · published October 2, 2026

CVSS v3.1
7.2
EPSS
0%
Percentile
16.6
In the wild
Unconfirmed
What it is

The MW WP Form plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'post_id' parameter in all versions up to, and including, 5.1.7 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 CSRF gate protecting form submission (MW_WP_Form_Csrf) is bypassable by any unauthenticated visitor who first loads the public form page to obtain a valid double-submit cookie, leaving no effective barrier to storing malicious payloads.

The record
Technical detail
CVSS v3.1
7.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00259 · 16.6th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-10-02T12:17Z
References (7)
https://plugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.6/classes/models/class.contact-data-setting.php#L200 · [email protected]https://plugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.6/classes/models/class.parser.php#L156 · [email protected]https://plugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.6/classes/models/class.parser.php#L208 · [email protected]https://plugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.6/classes/services/class.exec-shortcode.php#L122 · [email protected]https://plugins.trac.wordpress.org/browser/mw-wp-form/tags/5.1.6/classes/services/class.exec-shortcode.php#L151 · [email protected]https://plugins.trac.wordpress.org/changeset?reponame=&old=3715473%40mw-wp-form&new=3715473%40mw-wp-form · [email protected]https://www.wordfence.com/threat-intel/vulnerabilities/id/060ff51b-536d-4022-a68a-f77dc6c9c814?source=cve · [email protected]
EPSS history
Timeline
  • 03 OCT 03:47Z
    EPSS moved — → 0%
    epss
  • 02 OCT 07:39Z
    MW WP Form <= 5.1.7 - Unauthenticated Stored Cross-Site Scripting via 'post_id' Parameter (via stored form-submitted post meta)
    cvelistv5