Modular DS <= 2.5.1 - Unauthenticated Privilege Escalation

Improper Privilege Management
CVE CVE-2026-23550
CVSS Critical (9.8)
Publicly Published January 14, 2026
Last Updated January 22, 2026
Researcher Teemu Saarentaus
Description

The Modular DS: Monitor, update, and backup multiple websites plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 2.5.1. This is due to a broken oAuth implementation. This makes it possible for unauthenticated attackers to log in as an administrator.

References

1 affected software package

Software Type Plugin
Software Slug modular-connector (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 2.5.1
Patched Version
  • 2.5.2
This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.
License: Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy. License Detail.