CVE-2025-9816 - CVE House
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Status published High CVE-2025-9816

WP Statistics <= 14.5.4 - Unauthenticated Stored Cross-Site Scripting via User-Agent Header

Vulnerability Description

The WP Statistics – The Most Popular Privacy-Friendly Analytics Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the User-Agent Header in all versions up to, and including, 14.5.4 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Dmitrii Ignatyev

Affected Vendor

Affected Software

WP Statistics – Simple, privacy-friendly Google Analytics alternative
Vulnerable Versions:
0

Timeline

Official Publish: September 27th, 2025
Last Modified: April 8th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Weaknesses (CWE)