WP Maintenance <= 6.1.9.7 - Authenticated (Administrator+) PHP Object Injection

7.2
Deserialization of Untrusted Data
CVE CVE-2025-47683
CVSS 7.2 (High)
Publicly Published May 7, 2025
Last Updated May 21, 2025
Researcher Ngo Bui Truong Vu

Description

The WP Maintenance plugin for WordPress is vulnerable to PHP Object Injection in versions up to, and including, 6.1.9.7 via deserialization of untrusted input via the wpm_process_settings_export() function. This makes it possible for authenticated attackers, with administrator-level access and above, to inject a PHP Object. No known POP chain is present in the vulnerable software. If a POP chain is present via an additional plugin or theme installed on the target system, it could allow the attacker to delete arbitrary files, retrieve sensitive data, or execute code.

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Vulnerability Details for WP Maintenance

Software Type Plugin
Software Slug wp-maintenance (view on wordpress.org)
Patched? Yes
Remediation Update to version 6.1.9.8, or a newer patched version
Affected Version
  • <= 6.1.9.7
Patched Version
  • 6.1.9.8

Recent vulnerabilities in WP Maintenance

# Title CVE ID CVSS Researchers Date
1 WP Maintenance <= 6.1.9.2 - IP Spoofing to Maintenance Mode Bypass CVE-2024-0789 5.3 Hoa Le Ngoc (lengochoa) June 18, 2024
2 WP Maintenance <= 6.1.6 - Information Exposure CVE-2024-1472 5.3 Francesco Carlucci February 16, 2024
3 WP Maintenance <= 6.1.3 - IP Restriction Bypass CVE-2023-47769 5.3 Kévin Mosbahi (Mika) November 14, 2023
4 WP Maintenance <= 6.0.7 - Authenticated (Admin+) Cross-Site Scripting CVE-2022-30536 5.5 R3N0 June 28, 2022
5 WP Maintenance <= 6.0.5 - Authenticated (Admin+) Stored Cross-Site Scripting CVE-2021-36828 5.5 Asif Nawaz Minhas April 15, 2022
6 WP Maintenance <= 5.0.5 - Cross-Site Request Forgery to Stored Cross-Site Scripting CVE-2019-19979 8.8 Chloe Chamberland November 19, 2019

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