# Subscribe to Comments <= 2.3.2 - Cross-Site Request Forgery via Subscription Manager

- **ID:** WPSEC-2026-0600
- **Plugin:** Subscribe to Comments (`subscribe-to-comments`), https://wordpress.org/plugins/subscribe-to-comments/
- **Affected versions:** all versions before 2.3.3
- **Fixed in:** 2.3.3 (Update to 2.3.3 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 None seen (as of 2026-10-07)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/subscribe-to-comments
- **Fix released:** 2026-10-06
- **Published:** 2026-10-07
- **URL:** https://wpsec.com/vuln/WPSEC-2026-0600/

## Description

The Subscribe to Comments plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.3.2 due to missing nonce validation on the subscription manager's actions. This makes it possible for unauthenticated attackers to remove any subscriber's comment subscriptions via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

## References

- https://wpsec.com/vuln/WPSEC-2026-0600/
- https://plugins.svn.wordpress.org/subscribe-to-comments/tags/2.3.3/
- https://wordpress.org/plugins/subscribe-to-comments/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-0600/

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.