CVE-2025-4055: Multiple Post Type Order <= 1.10.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via mpto Shortcode
Description
The Multiple Post Type Order plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'mpto' shortcode in all versions up to, and including, 1.10.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Classification
CVE ID: CVE-2025-4055
CVSS Base Severity: MEDIUM
CVSS Base Score: 6.4
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Problem Types
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Affected Products
Vendor: josj404
Product: Multiple Post Type Order
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.03% (probability of being exploited)
EPSS Percentile: 7.65% (scored less or equal to compared to others)
EPSS Date: 2025-06-04 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-4055https://www.wordfence.com/threat-intel/vulnerabilities/id/b148926d-090d-4fab-991c-89105078a263?source=cve
https://wordpress.org/plugins/multiple-post-type-order/#developers