Vulnerabilities / Subscribe to Comments / WPSEC-2026-0588
Subscribe to Comments <= 2.3.1 - Reflected Cross-Site Scripting via 'ref' Parameter
Medium 6.1
CWE-79Fixed in 2.3.2
- ID
- WPSEC-2026-0588
- Plugin
- Subscribe to Comments (subscribe-to-comments)
- Affected
- all versions before 2.3.2
- Remediation
- Update to 2.3.2 or later.
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Weakness
- CWE-79
- Usage
- Plugin Low · Affected versions None seen among sites WPSec scans, 2026-10-07
- Attack surface
- Subscribe to Comments on WPSec AttackSurface
- Fix released
- Published
Description
The Subscribe to Comments plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'ref' parameter of the subscription manager in all versions up to, and including, 2.3.1 due to insufficient input validation and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user, such as an administrator, into clicking a link.
References
- https://wpsec.com/vuln/WPSEC-2026-0588/
- https://plugins.svn.wordpress.org/subscribe-to-comments/tags/2.3.2/
- https://wordpress.org/plugins/subscribe-to-comments/
Published by WPSec. Provided as is, without warranty. Corrections: contact us.
This advisory as JSON or Markdown · All advisories: JSON, RSS