Subscribe2 <= 10.40 - Cross-Site Request Forgery

Description

The Subscribe2 plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 10.40. This is due to missing or incorrect nonce validation when sending test emails. This makes it possible for unauthenticated attackers to send test emails with custom content to users on sites running a vulnerable version of this plugin via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Scores

EPSS (exploitation in 30 days)

0.30% · top 78% of all CVEs (6 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.3.

Weakness

• CWE-352 Cross-Site Request Forgery (CSRF) (opens in a new tab)All about CWE-352 and its CVEs

Affected products

• wedevs · Subscribe2 – Form, Email Subscribers & Newsletters

  • affected ≤ 10.40

References (3)

• https://www.wordfence.com/threat-intel/vulnerabilities/id/92b4d800-2895-4f7b-8b3b-ee6df75a7908?source=cve (opens in a new tab)x_transferred
• https://plugins.trac.wordpress.org/browser/subscribe2/trunk/admin/send-email.php#L12 (opens in a new tab)x_transferred
• https://plugins.trac.wordpress.org/changeset/2930676 (opens in a new tab)x_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2023-3407](https://trackcve.app/badge/CVE-2023-3407.svg)](https://trackcve.app/cve/CVE-2023-3407)

Record last updated 8 Apr 2026, 17:09 UTC.