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.
History

Tue, 25 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 25 Aug 2026 13:15:00 +0000

Type Values Removed Values Added
First Time appeared Contrid
Contrid newsletters
Wordpress
Wordpress wordpress
Vendors & Products Contrid
Contrid newsletters
Wordpress
Wordpress wordpress

Tue, 25 Aug 2026 11:45:00 +0000

Type Values Removed Values Added
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.
Title Newsletters <= 4.17 - Missing Authorization to Authenticated (Author+) Arbitrary Modification via 'newsletters_mailinglistsroles' POST Parameter
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-08-25T18:03:51.392Z

Reserved: 2026-08-18T14:59:22.463Z

Link: CVE-2026-75908

cve-icon Vulnrichment

Updated: 2026-08-25T18:03:48.253Z

cve-icon NVD

Status : Received

Published: 2026-08-25T12:16:24.927

Modified: 2026-08-25T18:18:04.540

Link: CVE-2026-75908

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-25T13:00:13Z