Newsletters <= 4.17 - Missing Authorization to Authenticated (Author+) Arbitrary Modification via 'newsletters_mailinglistsroles' POST Parameter
| CVE | CVE-2026-75908 |
|---|---|
| CVSS | 4.3 (Medium) |
| Publicly Published | August 24, 2026 |
| Last Updated | August 25, 2026 |
| Researcher |
Wordfence PRISM
- Wordfence
|
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.
References
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
- plugins.trac.wordpress.org
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Vulnerability Details for Newsletters
| Software Type | Plugin |
|---|---|
| Software Slug | newsletters-lite (view on wordpress.org) |
| Patched? | Yes |
| Remediation | Update to version 4.18, or a newer patched version |
| Affected Version |
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| Patched Version |
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Recent vulnerabilities in Newsletters
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