# Subscribe to Comments <= 2.3.1 - Authenticated (Author+) Missing Authorization to Plugin Settings Update

- **ID:** WPSEC-2026-0590
- **Plugin:** Subscribe to Comments (`subscribe-to-comments`), https://wordpress.org/plugins/subscribe-to-comments/
- **Affected versions:** all versions before 2.3.2
- **Fixed in:** 2.3.2 (Update to 2.3.2 or later.)
- **Severity:** Medium 6.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N)
- **Weakness:** CWE-862
- **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-2026-0590/

## Description

The Subscribe to Comments plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on its settings page in all versions up to, and including, 2.3.1. This makes it possible for authenticated attackers, with Author-level access and above, to change the plugin's settings, including injecting scripts into the comment form text and setting the secret used to generate subscription-management keys.

## References

- https://wpsec.com/vuln/WPSEC-2026-0590/
- https://plugins.svn.wordpress.org/subscribe-to-comments/tags/2.3.2/
- https://wordpress.org/plugins/subscribe-to-comments/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-0590/

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.