CVE-2026-15283

Name of the Vulnerable Software and Affected Versions WPvivid Backup for MainWP versions prior to 0.9.34

Description Stored Cross-Site Scripting occurs due to insufficient input sanitization and output escaping within admin settings. This allows authenticated attackers with administrator-level permissions or higher to inject arbitrary web scripts into pages. These scripts execute when a user accesses the affected page. This issue specifically impacts multi-site installations and environments where unfiltered html has been disabled.

Recommendations Update WPvivid Backup for MainWP to version 0.9.34 or later.