CVE-2023-1844: Subscribe2 <= 10.40 - Missing Authorization

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-06-28 · updated 2026-06-17
Weakness: CWE-862

Description

The Subscribe2 plugin for WordPress is vulnerable to unauthorized access to email functionality due to a missing capability check when sending test emails in versions up to, and including, 10.40. This makes it possible for author-level attackers to send emails with arbitrary content and attachments to site users.

Affected products

wedevs Subscribe2 – Form, Email Subscribers & Newsletters: through 10.40

References

https://plugins.trac.wordpress.org/browser/subscribe2/trunk/admin/send-email.php#L12
https://plugins.trac.wordpress.org/changeset/2930676
https://www.wordfence.com/threat-intel/vulnerabilities/id/c34ce601-5cf9-433f-bc9d-5c705eba6b08?source=cve
https://plugins.trac.wordpress.org/browser/subscribe2/trunk/admin/send-email.php#L12
https://plugins.trac.wordpress.org/changeset/2930676
https://www.wordfence.com/threat-intel/vulnerabilities/id/c34ce601-5cf9-433f-bc9d-5c705eba6b08?source=cve

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