# WP Encryption <= 7.8.8.1 - Cross-Site Request Forgery to SSL Validation and HTTPS Enforcement

- **ID:** WPSEC-2026-0721
- **Plugin:** WP Encryption – One Click SSL / HTTPS & Free SSL Certificate, HTTPS Redirect, Security (`wp-letsencrypt-ssl`), https://wordpress.org/plugins/wp-letsencrypt-ssl/
- **Affected versions:** from 5.2.6 before 7.8.8.2
- **Fixed in:** 7.8.8.2 (Update to 7.8.8.2 or later.)
- **Severity:** Medium 4.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N)
- **Weakness:** CWE-352
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-10-10)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/wp-letsencrypt-ssl
- **Fix released:** 2026-10-08
- **Published:** 2026-10-10
- **URL:** https://wpsec.com/vuln/WPSEC-2026-0721/

## Description

The WP Encryption – One Click SSL / HTTPS & Free SSL Certificate, HTTPS Redirect, Security plugin for WordPress is vulnerable to Cross-Site Request Forgery via the wple_validate_ssl AJAX action in all versions up to, and including, 7.8.8.1, due to missing nonce validation in the wple_validate_nocp_ssl() function. This makes it possible for unauthenticated attackers to turn on the plugin's force HTTPS redirect and switch the site and home URLs to HTTPS through a forged request, if the site already serves a valid certificate and they can trick a site administrator into performing an action such as clicking on a link.

## References

- https://wpsec.com/vuln/WPSEC-2026-0721/
- https://plugins.svn.wordpress.org/wp-letsencrypt-ssl/tags/7.8.8.2/
- https://wordpress.org/plugins/wp-letsencrypt-ssl/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-0721/

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.