# Subscribe to Comments <= 2.3.2 - Authenticated (Subscriber+) Incorrect Authorization to Subscription Takeover via Unverified Account Email

- **ID:** WPSEC-2026-0602
- **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 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N)
- **Weakness:** CWE-863
- **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-2026-0602/

## Description

The Subscribe to Comments plugin for WordPress is vulnerable to Incorrect Authorization in all versions up to, and including, 2.3.2 due to the plugin treating a user's unverified account e-mail address as proof of ownership of that address. This makes it possible for authenticated attackers, with Subscriber-level access and above, to obtain the subscription-management link of another person's e-mail address and manage that person's comment subscriptions.

## References

- https://wpsec.com/vuln/WPSEC-2026-0602/
- 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-2026-0602/

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.