The GZSEO plugin for WordPress is vulnerable to authorization bypass leading to Stored Cross-Site Scripting in all versions up to, and including, 2.0.11. This is due to missing capability checks on multiple AJAX handlers combined with insufficient input sanitization and output escaping on the embed_code parameter. This makes it possible for authenticated attackers, with contributor level access and above, to inject arbitrary content into any post on the site that will execute whenever a user accesses an injected page.
CVSS Details
- CVSS 3.1 Base Score: 6.4
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Gzseo Plugin | — | Update gzseo plugin to version 2.0.12, or a newer patched version | Feb 25, 2026 | Jan 23, 2026 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub