Vulnerability Description
The Newsletters plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.17. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with author-level access and above, to send arbitrary newsletter emails to users of any WordPress role, including administrators, by forging POST fields during a normal post submission. This allows an attacker-supplied role slug via the newsletters_mailinglistsroles POST field to be passed directly to get_users(), enabling unauthorized mass-mailing and potential phishing against privileged site users through the site's own outbound email channel.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.17/includes/c
- https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.17/wp-mailing
- https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.17/wp-mailing
- https://plugins.trac.wordpress.org/browser/newsletters-lite/tags/4.17/wp-mailing
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3663788%40newsletters
- https://www.wordfence.com/threat-intel/vulnerabilities/id/1d3eddce-1b41-4a33-8d5
FAQ
What is CVE-2026-75908?
CVE-2026-75908 is a vulnerability with a CVSS score of 4.3 (MEDIUM). The Newsletters plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.17. This is due to the plugin not properly verifying that a user is authorized to per...
How severe is CVE-2026-75908?
CVE-2026-75908 has been rated MEDIUM with a CVSS base score of 4.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-75908?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.