CVE-2025-69328: WooCommerce Booking Manager Vulnerability

CVE-2025-69328 Overview

CVE-2025-69328 is a deserialization of untrusted data vulnerability affecting the Booking and Rental Manager for WooCommerce WordPress plugin developed by magepeopleteam. This PHP Object Injection flaw allows authenticated attackers with low privileges to inject arbitrary objects into the application through insecure deserialization of user-controlled input.

The vulnerability stems from improper handling of serialized data within the plugin, enabling attackers to manipulate object properties and potentially achieve remote code execution, data manipulation, or other malicious outcomes depending on available "gadget chains" within the WordPress installation.

Critical Impact

Authenticated attackers can exploit this PHP Object Injection vulnerability to potentially execute arbitrary code, modify sensitive data, or compromise the integrity of WooCommerce-based booking systems.

Affected Products

• Booking and Rental Manager for WooCommerce versions up to and including 2.5.9
• WordPress installations running the vulnerable plugin versions
• WooCommerce environments with the affected plugin active

Discovery Timeline

• 2026-02-20 - CVE CVE-2025-69328 published to NVD
• 2026-02-24 - Last updated in NVD database

Technical Details for CVE-2025-69328

Vulnerability Analysis

This vulnerability is classified under CWE-502 (Deserialization of Untrusted Data), which occurs when an application deserializes data from untrusted sources without proper validation. In the context of PHP applications like WordPress plugins, this typically involves the unserialize() function processing user-supplied input.

When PHP deserializes an object, it can trigger "magic methods" such as __wakeup(), __destruct(), or __toString(). If an attacker can control the serialized data and there are suitable classes (gadget chains) available in the codebase, they can chain together method calls to achieve arbitrary code execution or other malicious actions.

The Booking and Rental Manager plugin fails to adequately validate or sanitize serialized input before processing, creating an attack surface for authenticated users with minimal privileges.

Root Cause

The root cause of this vulnerability lies in the insecure use of PHP's deserialization functionality within the Booking and Rental Manager plugin. The plugin accepts serialized data from user input and passes it directly to the unserialize() function without implementing proper input validation, sanitization, or using safer alternatives like JSON encoding.

This design flaw allows attackers to craft malicious serialized payloads that, when deserialized, instantiate arbitrary objects with attacker-controlled properties. The impact depends on the presence of exploitable classes (POP gadget chains) within the WordPress core, WooCommerce, or other installed plugins.

Attack Vector

The attack is network-based and requires authentication with low-level privileges (such as a subscriber or customer account). The attacker crafts a malicious serialized PHP object payload and submits it through vulnerable input fields or API endpoints within the plugin.

Upon deserialization, the malicious object triggers a chain of method calls that can lead to:

• Arbitrary file writes or reads
• Remote code execution via available gadget chains
• Database manipulation
• Privilege escalation within the WordPress environment

The vulnerability does not require user interaction beyond the attacker's initial authentication, making it particularly dangerous in multi-user WordPress environments with WooCommerce booking functionality.

Detection Methods for CVE-2025-69328

Indicators of Compromise

• Unusual serialized data patterns in HTTP request parameters, particularly containing PHP object notation (e.g., O: prefixes)
• Unexpected file modifications in WordPress directories following plugin interactions
• Anomalous database queries or modifications tied to the Booking and Rental Manager plugin
• Web application firewall logs showing serialized PHP object payloads

Detection Strategies

• Implement web application firewall rules to detect and block serialized PHP object patterns in incoming requests
• Monitor WordPress audit logs for suspicious activity from low-privilege accounts interacting with booking functionality
• Deploy runtime application self-protection (RASP) solutions capable of detecting deserialization attacks
• Review server access logs for unusual POST requests to plugin endpoints containing serialized data

Monitoring Recommendations

• Enable verbose logging for the Booking and Rental Manager plugin and related WooCommerce components
• Configure SIEM alerts for patterns matching PHP object injection attempts (serialized object signatures)
• Monitor file integrity for WordPress core files and plugin directories to detect post-exploitation artifacts
• Audit user account activity, particularly for accounts with subscriber or customer roles exhibiting administrative actions

How to Mitigate CVE-2025-69328

Immediate Actions Required

• Update the Booking and Rental Manager for WooCommerce plugin to a patched version immediately once available
• Temporarily disable the plugin if a patch is not yet available and booking functionality is not critical
• Review user accounts and revoke access for any suspicious low-privilege accounts
• Implement web application firewall rules to block serialized PHP object payloads

Patch Information

Organizations should monitor the Patchstack vulnerability database for official patch announcements and update details. Contact magepeopleteam directly for patch availability information. Ensure all plugin updates are applied from official WordPress plugin repository sources only.

Workarounds

• Deploy a web application firewall (WAF) rule to filter requests containing serialized PHP object patterns
• Restrict user registration and limit account creation to reduce the attack surface for authenticated exploits
• Implement additional input validation at the server level using security plugins like Wordfence or Sucuri
• Consider using PHP 8.x which has deprecated some magic methods, reducing gadget chain availability

# Configuration example - WAF rule pattern for ModSecurity
SecRule REQUEST_BODY "@rx O:\d+:\"[^\"]+\":\d+:\{" \
    "id:1001,\
    phase:2,\
    deny,\
    status:403,\
    msg:'PHP Object Injection Attempt Blocked',\
    log,\
    tag:'OWASP_CRS/WEB_ATTACK/PHP_INJECTION'"