# Newsletters <= 4.18.2 - Authenticated (Subscriber+) SQL Injection via Profile Email Address

- **ID:** WPSEC-2026-2985
- **Plugin:** Newsletters (`newsletters-lite`), https://wordpress.org/plugins/newsletters-lite/
- **Affected versions:** all versions before 4.18.3
- **Fixed in:** 4.18.3 (Update to 4.18.3 or later.)
- **Severity:** Medium 6.5 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
- **Weakness:** CWE-89
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-11-12)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/newsletters-lite
- **Fix released:** 2026-11-10
- **Published:** 2026-11-12
- **URL:** https://wpsec.com/vuln/WPSEC-2026-2985/

## Description

The Newsletters plugin for WordPress is vulnerable to SQL Injection via the logged-in user's profile email address in all versions up to, and including, 4.18.2. This is due to the email address being concatenated directly into an SQL query without preparation when the subscription form or widget checks whether the current user is already subscribed. Because WordPress permits characters such as apostrophes in email addresses, this makes it possible for authenticated attackers, with Subscriber-level access and above, to append additional SQL queries to existing queries and extract sensitive information from the database.

## References

- https://wpsec.com/vuln/WPSEC-2026-2985/
- https://plugins.svn.wordpress.org/newsletters-lite/tags/4.18.3/
- https://wordpress.org/plugins/newsletters-lite/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-2985/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.