PT-2026-34306 · WordPress · Sendmachine

Nabil Irawan · Published 2026-04-22 · Updated 2026-05-01 · CVE-2026-6235

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Sendmachine for WordPress versions prior to 1.0.21

Description An authorization bypass exists via the manage admin requests() function because the plugin fails to properly verify if a user is authorized to perform an action. This allows unauthenticated attackers to overwrite the SMTP configuration, enabling the interception of all outbound emails from the site, including password reset emails.

Recommendations Update to a version later than 1.0.20. As a temporary workaround, consider restricting access to the manage admin requests() function until the update is applied.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-6235

Affected Products

Sendmachine

References · 11

• https://nvd.nist.gov/vuln/detail/CVE-2026-6235 · Security Note
• https://plugins.trac.wordpress.org/browser/sendmachine/tags/1.0.20/sendmachine_wp_admin.php#L183 · Note
• https://twitter.com/ctiwatchcloud/status/2047284373699846550 · Twitter Post
• https://twitter.com/OrizonCyber/status/2046884231368851704 · Twitter Post
• https://plugins.trac.wordpress.org/browser/sendmachine/tags/1.0.20/sendmachine_wp_admin.php#L174 · Note
• https://twitter.com/VulmonFeeds/status/2046912350419140781 · Twitter Post
• https://twitter.com/CVEnew/status/2047428121255936167 · Twitter Post
• https://plugins.trac.wordpress.org/browser/sendmachine/tags/1.0.20/includes/sendmachine_email_manager.php#L39 · Note
• https://twitter.com/0dayPublishing/status/2046867855233208349 · Twitter Post
• https://twitter.com/DFIR_Radar/status/2050048343196274848 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/7889e071-84a8-46ec-abe5-5c98980ce275?source=cve · Note