CVE-2026-15780

WP Statistics <= 14.16.8 - Unauthenticated Stored Cross-Site Scripting via 'utm_campaign' Parameter

The WP Statistics – Simple, privacy-friendly Google Analytics alternative plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'utm_campaign' parameter in all versions up to, and including, 14.16.8 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 payload can be planted without authentication via the public /wp-statistics/v2/hit REST endpoint, because the required signature is exposed on the public homepage and a base64-encoded page_uri POST parameter overrides the previously sanitized REQUEST_URI, allowing the malicious utm_campaign value to bypass sanitization and be stored in the database.

We have discovered 108,068 live websites that are affected by CVE-2026-15780.

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Affected Software

Product  WP Statistics
Category Wordpress Plugins
Vulnerable Domains108,068 live websites (91% of WP Statistics install base)
Vulnerable Versions
  • from 0 through 14.16.8
Vulnerable Versions Count135 versions ( 99% of all versions)


Common Weakness Enumeration

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')



Details

  • Published - Aug 19, 2026
  • Updated - Aug 19, 2026

Credits

  • tipsen (finder)

Website Distribution by Country

Number of websites using CVE-2026-15780
United States17,268 websites


Germany23,500 websites
France7,863 websites
Netherlands4,952 websites
Japan4,429 websites
Italy4,152 websites
Poland3,858 websites
Iran3,474 websites
GB2,961 websites
Switzerland2,926 websites

Website Distribution by TLD

Number of websites using CVE-2026-15780
.com32,909 websites
.de16,577 websites
.org5,128 websites
.nl4,407 websites
.fr3,798 websites
.net3,021 websites
.it2,917 websites
.pl2,909 websites
.ch2,411 websites
.at1,826 websites

Vulnerable Versions

Vulnerable versions are highlighted in red

Websites affected by CVE-2026-15780

Top websites that are affected by CVE-2026-15780. Please click on the "Contact us" link to get more information.
DomainCountryRankContacts
********.com United States*,***
****************.org United States**,***
*****.at Germany**,***
**************.pl Poland**,***
****************.de Germany**,***
********.**********.com United States**,***
***********.fr France**,***
***************.com United States**,***
***********.com Germany**,***
***.org United States**,***
See full domain list

FAQ

CVE-2026-15780 is Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in WP Statistics
A total of 108,068 websites have been identified as vulnerable to CVE-2026-15780, based on global website indexing conducted by WebTechSurvey.
The WP Statistics is affected by the CVE-2026-15780 vulnerability.
WP Statistics versions up to and including 14.16.8 are vulnerable to CVE-2026-15780.

References