CVE-2026-15283

The WPvivid Backup for MainWP plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 0.9.33 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.

• CWE-79

• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3047890%40wpvivid-backup-mainwp&new=3047890%40wpvivid-backup-mainwp&sfp_email=&sfph_mail=
• https://www.wordfence.com/threat-intel/vulnerabilities/id/2083fdf7-e251-4162-b38f-8dab4395a8a7?source=cve

Published

Jul 10, 2026

Last Modified

Jul 10, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
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