CVE-2026-8906: WP Promoter <= 1.3 - Cross-Site Request Forgery to Stored Cross-Site Scripting via 'popup_width' Parameter

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-27 · updated 2026-06-17
Weakness: CWE-352

Description

The WP Promoter plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.3. This is due to missing or incorrect nonce validation on a function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Affected products

rahulbhangale WP Promoter: through 1.3

References

https://plugins.trac.wordpress.org/browser/wp-promoter/tags/1.3/admin-wp-promoter.php#L120
https://plugins.trac.wordpress.org/browser/wp-promoter/tags/1.3/admin-wp-promoter.php#L45
https://plugins.trac.wordpress.org/browser/wp-promoter/tags/1.3/admin-wp-promoter.php#L64
https://plugins.trac.wordpress.org/browser/wp-promoter/tags/1.3/admin-wp-promoter.php#L66
https://www.wordfence.com/threat-intel/vulnerabilities/id/8451fe09-4280-49ef-b088-698cbf40b86b?source=cve

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