EUVD-2025-10758

Comprehensive Technical Analysis of EUVD-2025-10758

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-10758 pertains to a Deserialization of Untrusted Data issue in the WpBookingly plugin, which allows for Object Injection. This vulnerability is rated with a CVSS Base Score of 9.8, indicating a critical severity level. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H breaks down as follows:

• Attack Vector (AV): Network (N) - The vulnerability can be exploited remotely over the network.
• Attack Complexity (AC): Low (L) - The attack requires minimal skill or resources to exploit.
• Privileges Required (PR): None (N) - No special privileges are needed to exploit the vulnerability.
• User Interaction (UI): None (N) - No user interaction is required for the attack to succeed.
• Scope (S): Unchanged (U) - The vulnerability does not change the security scope.
• Confidentiality (C): High (H) - The vulnerability allows for significant breaches of confidentiality.
• Integrity (I): High (H) - The vulnerability allows for significant breaches of integrity.
• Availability (A): High (H) - The vulnerability allows for significant breaches of availability.

Given the high scores in confidentiality, integrity, and availability, this vulnerability poses a severe risk to systems using the affected plugin.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector for this vulnerability is through the deserialization of untrusted data, which can lead to Object Injection. An attacker could exploit this by:

• Crafting Malicious Input: Sending specially crafted serialized data to the application.
• Remote Code Execution (RCE): If the deserialized object allows for code execution, the attacker could execute arbitrary code on the server.
• Data Exfiltration: The attacker could manipulate the deserialized object to extract sensitive information from the server.
• Denial of Service (DoS): The attacker could cause the application to crash or become unresponsive by injecting malicious objects.

3. Affected Systems and Software Versions

The vulnerability affects the WpBookingly plugin versions from n/a through 1.2.0. This plugin is used in WordPress environments, which are widely deployed across various industries. Any WordPress site using the affected versions of WpBookingly is at risk.

4. Recommended Mitigation Strategies

To mitigate the risk associated with this vulnerability, the following steps are recommended:

• Immediate Patching: Upgrade to a patched version of the WpBookingly plugin as soon as it becomes available.
• Input Validation: Implement strict input validation and sanitization to ensure that only trusted data is deserialized.
• Disable Unnecessary Features: Disable any features or functionalities that are not required, especially those related to deserialization.
• Monitoring and Logging: Enhance monitoring and logging to detect any suspicious activities related to deserialization.
• Web Application Firewalls (WAF): Deploy WAFs to filter out malicious input and protect against known attack patterns.

5. Impact on European Cybersecurity Landscape

The impact of this vulnerability on the European cybersecurity landscape is significant due to the widespread use of WordPress and its plugins. Organizations and individuals using the affected plugin are at risk of data breaches, unauthorized access, and service disruptions. This vulnerability underscores the importance of regular security audits, timely patching, and adherence to best practices in software development and deployment.

6. Technical Details for Security Professionals

For security professionals, the following technical details are crucial:

• Vulnerability Type: Deserialization of Untrusted Data leading to Object Injection.
• Affected Component: WpBookingly plugin for WordPress.
• Exploitation Method: Crafting and sending malicious serialized data to the application.
• Detection: Monitor for unusual deserialization activities and unexpected object behaviors.
• Mitigation: Implement robust input validation, use secure deserialization libraries, and apply patches promptly.
• References:
  • NVD Entry
  • Patchstack Analysis

By understanding these details, security professionals can better prepare and respond to this vulnerability, ensuring the protection of their systems and data.