CVE-2026-1051

Newsletter – Send awesome emails from WordPress <= 9.1.0 - Cross-Site Request Forgery to Newsletter Unsubscription

mediumCross-Site Request Forgery (CSRF)

4.3

CVSS Score

4.3

CVSS Score

medium

Severity

9.1.1

Patched in

Time to patch

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.

CVSS Vector Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

None

Confidentiality

Low

Integrity

None

Availability

Technical Details

Affected versions<=9.1.0

PublishedJanuary 19, 2026

Last updatedJanuary 20, 2026

Affected pluginnewsletter

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/8de2156f-5087-4c16-8e5d-93b5c72ec536?source=api-prod

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