The Gwolle Guestbook plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'permalink' parameter in all versions up to, and including, 5.1.1 due…

Code

The project this record applies to. Exploit listings stay in References.

• Repository · codeberg.org
• Plugin source · wordpress.org

Timeline

Detection, updates, and resolution for this record.

1. Oct 16, 2026 · NIST NVD

   Detected

   The Gwolle Guestbook plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'permalink' parameter in all versions up to, and including, 5.1.1 due to insufficient input sanitization 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 into performing an action such

Sources

• NIST NVDVulnerability recordCVE-2026-103481

  The Gwolle Guestbook plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'permalink' parameter in all versions up to, and including, 5.1.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to

  nvd.nist.gov

References

• Reference · codeberg.org
• Reference · plugins.trac.wordpress.org
• Reference · plugins.trac.wordpress.org
• Reference · plugins.trac.wordpress.org
• Reference · wordfence.com