WP Post Author <= 3.2.3 - Privilege Escalation

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9.8
Improper Privilege Management
CVSS 9.8 (Critical)
Publicly Published June 28, 2023
Last Updated January 22, 2024

Description

The WP Post Author plugin for WordPress is vulnerable to privilege escalation in versions up to, and including, 3.2.3. This is due to insufficient controls on the /set-user-data REST API endpoint. This makes it possible for authenticated attackers to set their user role to administrator and gain complete access to the site. Attackers can easily obtain authenticated access using the /v1/frontend/register-user REST API endpoint, even when registration is disabled on the site.

References

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Vulnerability Details for WP Post Author – Author Box, Multiple Authors, Guest Authors & Custom Avatars

WP Post Author – Author Box, Multiple Authors, Guest Authors & Custom Avatars

Software Type Plugin
Software Slug wp-post-author (view on wordpress.org)
Patched? Yes
Remediation Update to version 3.3.0, or a newer patched version
Affected Version
  • <= 3.2.3
Patched Version
  • 3.3.0

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# Title CVE ID CVSS Researchers Date
1 WP Post Author <= 3.9.1 - Authenticated (Author+) SQL Injection CVE-2026-11977 6.5 Ryoma Nishioka August 4, 2026
2 WP Post Author – Author Box, Multiple Authors, Guest Authors & Custom Avatars <= 3.9.1 - Authenticated (Contributor+) SQL Injection CVE-2026-57643 6.5 hhhai June 26, 2026
3 Freemius <= 2.10.1 - Reflected DOM-Based Cross-Site Scripting via url Parameter CVE-2024-13362 6.1 Asaf Mozes April 30, 2026
4 WP Post Author <= 3.8.2 - Authenticated (Administrator+) SQL Injection CVE-2024-56247 4.9 NAWardRox December 30, 2024
5 Boost Your Blog's Engagement with WP Post Author <= 3.8.1 - Authenticated (Administrator+) SQL Injection CVE-2024-8757 7.2 Lesor101 October 11, 2024
6 WP Post Author <= 3.6.7 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2024-37101 6.4 Khalid June 20, 2024
7 WP Post Author – Enhance Your Posts with the Author Bio, Co-Authors, Guest Authors, and Post Rating System, including User Registration Form Builder <= 3.7.4 - Missing Authorization CVE-2024-34389 4.3 Kyle Sanchez May 6, 2024
8 WP Post Author – Enhance Your Posts with the Author Bio, Co-Authors, Guest Authors, and Post Rating System, including User Registration Form Builder <= 3.6.4 - Missing Authorization to Rating Manipulation CVE-2024-34387 4.3 Kyle Sanchez May 6, 2024
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