WordPress · Wpvivid · CVE-2023-5121
**Name of the Vulnerable Software and Affected Versions**
Migration, Backup, Staging – WPvivid plugin for WordPress versions up to, and including, 0.9.89
**Description**
The issue is related to Stored Cross-Site Scripting via admin settings, specifically the `backup path` parameter, due to insufficient input sanitization and output escaping. This allows authenticated attackers with administrator-level permissions to inject arbitrary web scripts in pages, which will execute when a user accesses an injected page. The issue only affects multi-site installations and installations where `unfiltered html` has been disabled.
**Recommendations**
For versions up to, and including, 0.9.89, update to a version higher than 0.9.89 to resolve the issue.
As a temporary workaround, consider restricting access to the admin settings and the `backup path` parameter to minimize the risk of exploitation.