CVE-2025-58662 Overview
CVE-2025-58662 is a Deserialization of Untrusted Data vulnerability [CWE-502] in the Awesome Support WordPress plugin developed by awesomesupport. The flaw affects all versions up to and including 6.3.5 and enables PHP Object Injection. An authenticated attacker with high privileges can submit serialized PHP objects that the plugin deserializes without validation. Successful exploitation can lead to arbitrary code execution, data tampering, and full compromise of the WordPress site. The vulnerability is network-exploitable and impacts confidentiality, integrity, and availability.
Critical Impact
Object Injection through unsafe deserialization can allow attackers to execute arbitrary PHP code, modify site data, and pivot to wider WordPress compromise.
Affected Products
- Awesome Support plugin for WordPress (awesome-support)
- All versions from n/a through <= 6.3.5
- WordPress installations using the affected plugin versions
Discovery Timeline
- 2025-09-22 - CVE CVE-2025-58662 published to NVD
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2025-58662
Vulnerability Analysis
The vulnerability resides in how the Awesome Support plugin handles serialized input data. The plugin calls PHP's unserialize() function on data that originates from user-controllable sources without enforcing strict type checks or allow-listing acceptable classes. When PHP deserializes attacker-supplied input, it instantiates objects and triggers magic methods such as __wakeup() or __destruct(). If exploitable POP (Property-Oriented Programming) gadget chains exist within the WordPress core, the plugin, or other installed plugins, the attacker can chain those gadgets to achieve arbitrary file operations or code execution.
Exploitation requires authenticated access with high privileges, which limits opportunistic mass exploitation. However, support staff accounts in ticketing systems are commonly distributed across organizations, expanding the attacker-reachable surface.
Root Cause
The root cause is the use of unsafe deserialization on untrusted input within plugin code paths reachable by authenticated users. PHP's unserialize() does not validate object types or restrict class instantiation by default, so any class loaded in the WordPress runtime becomes a potential injection target.
Attack Vector
An authenticated attacker submits a crafted serialized payload through a plugin endpoint that processes ticket data, attachments, or settings. The plugin deserializes the payload, instantiating attacker-defined objects and triggering gadget chains that execute arbitrary code or perform unauthorized actions in the WordPress context. Refer to the Patchstack Vulnerability Report for additional technical details.
Detection Methods for CVE-2025-58662
Indicators of Compromise
- Unexpected PHP files written to the WordPress wp-content/uploads/ or plugin directories
- New or modified administrator accounts created without authorized change records
- Outbound network connections from the web server to unfamiliar hosts following ticket activity
- WordPress error logs showing unserialize() warnings referencing unknown classes
Detection Strategies
- Inventory WordPress sites and identify installations running Awesome Support <= 6.3.5
- Monitor HTTP POST requests to Awesome Support endpoints for payloads containing serialized PHP markers such as O:, a:, or s:
- Review plugin and PHP error logs for deserialization exceptions or class-not-found errors
- Track changes to user roles, particularly elevation to administrator
Monitoring Recommendations
- Enable WordPress audit logging for plugin actions and user role modifications
- Forward web server, PHP, and WordPress logs to a centralized SIEM for correlation
- Alert on file integrity changes within WordPress core, plugin, and upload directories
How to Mitigate CVE-2025-58662
Immediate Actions Required
- Update the Awesome Support plugin to a version above 6.3.5 once a patched release is available
- Audit accounts with high-privilege roles and remove unused or unnecessary access
- Rotate WordPress passwords and API keys for support staff and administrators
- Review ticket data and uploaded attachments for indicators of malicious activity
Patch Information
Consult the Patchstack Vulnerability Report for the latest patch status and recommended upgrade path. Apply vendor updates through the standard WordPress plugin update mechanism.
Workarounds
- Restrict access to the WordPress admin interface using IP allow-listing or VPN
- Disable the Awesome Support plugin until a patched version is installed if business operations allow
- Deploy a Web Application Firewall (WAF) rule to block requests containing PHP serialized object patterns to plugin endpoints
- Apply the principle of least privilege to all WordPress user roles assigned to support staff
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
