CVE-2023-0453: WP Private Message < 1.0.6 - Private Message Disclosure via IDOR

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2023-02-21 · updated 2026-06-17

Description

The WP Private Message WordPress plugin (bundled with the Superio theme as a required plugin) before 1.0.6 does not ensure that private messages to be accessed belong to the user making the requests. This allowing any authenticated users to access private messages belonging to other users by tampering the ID.

Affected products

WP Private Message: before 1.0.6 — fixed in 1.0.6

How to fix

Upgrade to a fixed version: WP Private Message 1.0.6. Check the vendor advisory for mitigations.

References

https://themeforest.net/item/superio-job-board-wordpress-theme/32180231
https://wpscan.com/vulnerability/f915e5ac-e216-4d1c-aec1-c3be11e2a6de
https://themeforest.net/item/superio-job-board-wordpress-theme/32180231
https://wpscan.com/vulnerability/f915e5ac-e216-4d1c-aec1-c3be11e2a6de

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