CVE-2025-4099: List Children <= 2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode
Description
The List Children plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'list_children' shortcode in all versions up to, and including, 2.1 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-2025-4099
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: theandystratton
Product: List Children
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.03% (probability of being exploited)
EPSS Percentile: 6.51% (scored less or equal to compared to others)
EPSS Date: 2025-05-30 (when was this score calculated)
Stakeholder-Specific Vulnerability Categorization (SSVC)
SSVC Exploitation: none
SSVC Technical Impact: partial
SSVC Automatable: false
References
https://nvd.nist.gov/vuln/detail/CVE-2025-4099https://www.wordfence.com/threat-intel/vulnerabilities/id/538b4d4b-f8c6-44db-89d2-d345bfbfecb2?source=cve
https://plugins.trac.wordpress.org/browser/list-children/trunk/list_children.php#L26
https://plugins.trac.wordpress.org/changeset/3284430/