CVE-2026-90981
The Newsletter – Send awesome emails from WordPress plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'nn' parameter in all versions…
Impact
The Newsletter – Send awesome emails from WordPress plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'nn' parameter in all versions up to, and including, 9.3.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. Successful exploitation requires the victim to be a logged-in administrator, as the antibot check auto-passes for authenticated users, routing the unsanitized payload through the administrator-visible output branch of dienow().
Affected packages
This record carries no package version data, so it cannot be matched against a dependency list automatically. Read the advisory and compare your version by hand.
Weakness classification
References
- NVD record
- CVE.org record
- https://plugins.trac.wordpress.org/browser/newsletter/tags/9.3.8/includes/antispam.php#L35
- https://plugins.trac.wordpress.org/browser/newsletter/tags/9.3.8/includes/module-base.php#L1310
- https://plugins.trac.wordpress.org/browser/newsletter/tags/9.3.8/plugin.php#L156
- https://plugins.trac.wordpress.org/browser/newsletter/tags/9.3.8/subscription/subscription.php#L238
- https://plugins.trac.wordpress.org/browser/newsletter/tags/9.3.8/subscription/subscription.php#L682
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3695457%40newsletter&new=3695457%40newsletter
- https://www.wordfence.com/threat-intel/vulnerabilities/id/44b3b015-2482-4b80-b208-73f1abe21b27?source=cve