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Description

The Newsletter – Send awesome emails from WordPress plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 9.1.0. This is due to missing or incorrect nonce validation on the hook_newsletter_action() function. This makes it possible for unauthenticated attackers to unsubscribe newsletter subscribers via a forged request granted they can trick a logged-in user into performing an action such as clicking on a link.

PUBLISHED Reserved 2026-01-16 | Published 2026-01-20 | Updated 2026-01-20 | Assigner Wordfence




MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Problem types

CWE-352 Cross-Site Request Forgery (CSRF)

Product status

Default status
unaffected

* (semver)
affected

Timeline

2026-01-05:Discovered
2026-01-17:Vendor Notified
2026-01-19:Disclosed

Credits

Sergej Ljubojevic finder

Boris Bogosavac finder

References

www.wordfence.com/...-5087-4c16-8e5d-93b5c72ec536?source=cve

plugins.trac.wordpress.org/...ubscription/unsubscription.php

cve.org (CVE-2026-1051)

nvd.nist.gov (CVE-2026-1051)

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