Sendmachine for WordPress: A security weakness
Sendmachine for WordPress is affected by a security weakness. The vulnerable path is reachable without authentication. The resulting impact depends on how the affected component exposes the vulnerable operation. The published affected range is <= 1.0.20.
- Component
- Sendmachine for WordPress
- Plugin slug
sendmachine- Affected
- <= 1.0.20
- Safe version
> 1.0.20- Published
- Apr 22, 2026
- Weakness
- CWE-862 — Missing Authorization
This CVE was published Apr 22, 2026 and is one of 1 known issue for this plugin.
Update, patch or deactivate.
Update Sendmachine for WordPress to a release after 1.0.20, or disable and remove it until a fixed version is available.
A safe version is available, so updating to that version or later is the preferred remediation. If an immediate update is not practical, consider a targeted application patch or temporarily restricting the affected functionality.
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.
Technical description
The Sendmachine for WordPress plugin for WordPress is vulnerable to authorization bypass via the 'manage_admin_requests' function in all versions up to, and including, 1.0.20. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to overwrite the plugin's SMTP configuration, which can be leveraged to intercept all outbound emails from the site (including password reset emails).
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H