WP Private Message < 1.0.6 - Insecure Direct Object Reference

Authorization Bypass Through User-Controlled Key
CVE CVE-2023-0453
CVSS 7.1 (High)
Publicly Published January 30, 2023
Last Updated January 22, 2024
Researcher Veshraj Ghimire


The WP Private Message plugin for WordPress is vulnerable to insecure direct object reference in versions up to, and including, 1.0.6. This is due to insufficient validation on a user-controlled key identifying private messages between users. This makes it possible for authenticated attackers with subscriber-level capabilities and above to read arbitrary messages.



1 affected software package

Software Type Plugin
Software Slug wp-private-message
Patched? Yes
Remediation Update to version 1.0.6, or a newer patched version
Affected Version
  • < 1.0.6
Patched Version
  • 1.0.6

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