CVE-2026-96820 in Awesome Support Plugin
Summary
by MITRE • 09/30/2026
Subscriber Cross Site Scripting (XSS) in Awesome Support <= 6.3.9 versions.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 09/30/2026
The vulnerability identified as Subscriber Cross-Site Scripting within the Awesome Support plugin for WordPress, affecting versions up to and including 6.3.9, represents a significant security risk due to its potential impact on user data integrity and session hijacking capabilities. This flaw is classified under CWE-79, which denotes Improper Neutralization of Input During Web Page Generation commonly known as Cross-Site Scripting. The core technical issue stems from insufficient input validation and output encoding mechanisms within the plugin's handling of subscriber-related data fields. When a user with the Subscriber role interacts with specific features of the support ticket system, such as creating or editing tickets, the application fails to properly sanitize malicious script payloads before storing them in the database or rendering them back into the browser context without adequate escaping.
From an operational perspective, this vulnerability allows authenticated attackers who possess subscriber-level access privileges to inject client-side scripts into web pages viewed by other users or even themselves if reflected XSS vectors are present depending on the specific implementation details of the affected version. The attack vector typically involves crafting a malicious payload containing JavaScript code and embedding it within input fields that are subsequently rendered without proper encoding. Once executed, this script runs in the context of the victim's session with the Awesome Support plugin, granting the attacker the ability to perform actions as if they were the legitimate user. This can lead to unauthorized access to sensitive support tickets, theft of authentication cookies leading to account takeover, or redirection to malicious external sites designed for phishing purposes.
The impact extends beyond simple defacement or minor disruptions; it compromises the confidentiality and integrity of customer support interactions which often contain personally identifiable information and confidential business data. Attackers can leverage this vulnerability to exfiltrate session tokens, thereby bypassing authentication controls entirely if cookie flags such as HttpOnly are not strictly enforced across all application components. Furthermore, persistent XSS stored in ticket comments or descriptions could affect multiple users over time, creating a long-term threat surface that persists until the malicious content is manually removed by an administrator. This aligns with ATT&CK technique T1059 which covers Command and Scripting Interpreter usage for executing arbitrary code within the browser environment to achieve further exploitation goals such as credential harvesting or lateral movement if integrated systems are compromised.
Mitigation strategies must prioritize immediate patching of the Awesome Support plugin to version 6.3.10 or later where these input validation flaws have been addressed by developers through rigorous sanitization and encoding practices. Administrators should ensure that all WordPress plugins remain updated to their latest stable releases to benefit from security patches addressing known vulnerabilities. In environments where upgrading is not immediately feasible, implementing a Web Application Firewall can provide an additional layer of defense by filtering out requests containing suspicious script patterns before they reach the application logic. Additionally enforcing strict Content Security Policy headers helps mitigate the impact of successful XSS attacks by restricting the sources from which scripts can be loaded and executed within the browser context reducing the effectiveness of injected payloads even if input validation fails. Regular security audits and code reviews focusing on user input handling are essential to prevent similar vulnerabilities in custom or third-party WordPress extensions ensuring robust protection against cross-site scripting threats.