Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress: A security weakness

Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress is affected by a security weakness. Exploitation requires an authenticated contributor account. The resulting impact depends on how the affected component exposes the vulnerable operation. The published affected range is <= 5.9.27.

CVE / CNA score 4.3 CVSS 3.1 · security@wordfence.com

NVD score Pending NVD has not published its own CVSS assessment.

Component: Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress
Plugin slug: email-subscribers
Affected: <= 5.9.27
Safe version: See mitigation notes
Published: Jul 02, 2026
Weakness: CWE-862 — Missing Authorization

This CVE was published Jul 02, 2026 and is one of 22 known issues for this plugin.

What to do

Update, patch or deactivate.

No fixed release is identified. Update Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress when a release after 5.9.27 becomes available; until then, disable and remove it when the site's risk warrants. The official upstream changelog lists version 5.9.33, which is newer than the published affected range. Its changelog does not clearly confirm this specific fix, so it is not counted as a known-safe release.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

The Email Subscribers & Newsletters – Email Marketing, Post Notifications & Newsletter Plugin for WordPress plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 5.9.27. 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 contributor-level access and above, to overwrite plugin mail settings (from name and from email address), create audience lists, insert arbitrary contacts into those lists, create and overwrite newsletter broadcasts and post notifications, add workflows, and queue and dispatch mass email to arbitrary recipients.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

References

Primary and upstream sources

Data attribution: This product uses the NVD API but is not endorsed or certified by the NVD.

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