The Guest Author plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's guest author parameters in all versions up to, and including, 2.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
This vulnerability is a medium severity with CVSS 6.4 Stored Cross-Site Scripting issue affecting the Plugin Guest Author. It affects Versions up to 2.3 and is fixed in 2.4.
the tracked vulnerability is tracked for the Plugin Guest Author as medium severity with CVSS 6.4. The affected range is Versions up to 2.3. Update Guest Author to 2.4 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
guest-author
View on wordpress.org
|
| CVE | No linked CVE entry. |
| Patched Versions |
2.4
|
| Affected Versions |
Versions up to 2.3
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
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