CVE-2024-37460 in SuperSaaS Plugin
Summary
by MITRE • 07/22/2024
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in SuperSaaS SuperSaaS – online appointment scheduling allows Stored XSS.This issue affects SuperSaaS – online appointment scheduling: from n/a through 2.1.9.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 03/17/2025
This vulnerability represents a critical cross-site scripting flaw that enables attackers to inject malicious scripts into web pages viewed by other users. The vulnerability exists within the SuperSaaS online appointment scheduling platform and specifically targets the web page generation process where user input is not properly sanitized or escaped. The issue is classified as a stored XSS vulnerability, meaning that malicious payloads persist in the application's database and execute whenever affected pages are accessed by unsuspecting users. This type of vulnerability falls under CWE-79 which defines improper neutralization of input during web page generation, making it particularly dangerous as the malicious code can be executed repeatedly without requiring user interaction beyond the initial infection point. The vulnerability affects all versions of SuperSaaS from the initial release through version 2.1.9, indicating a long-standing security gap that has not been adequately addressed.
The technical exploitation of this vulnerability occurs when an attacker can inject malicious scripts through input fields that are subsequently stored and rendered in web pages. These scripts can execute in the context of other users' browsers, potentially allowing attackers to steal session cookies, hijack user accounts, or perform unauthorized actions on behalf of victims. The stored nature of this XSS vulnerability means that once the malicious payload is injected and saved, it will automatically execute for any user who views the affected content, making it particularly effective for mass impact attacks. The vulnerability demonstrates poor input validation and output encoding practices, where user-supplied data is not properly escaped before being rendered in HTML contexts, creating opportunities for attackers to inject script tags or other malicious content that will be executed by browsers when the content is displayed.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking, as it can enable sophisticated attack chains that align with several tactics described in the MITRE ATT&CK framework. Attackers can leverage this vulnerability to establish persistent access through cookie theft or by injecting additional malicious payloads that can further compromise the application. The vulnerability can be exploited by attackers who gain access to any part of the application where user input is accepted and stored, potentially leading to complete compromise of user accounts and sensitive scheduling data. Organizations using SuperSaaS may experience unauthorized access to appointment bookings, personal information disclosure, and potential service disruption as attackers can manipulate the scheduling system to their advantage. The vulnerability also poses risks to the application's integrity and availability, as malicious actors can inject content that may disrupt normal operations or redirect users to malicious sites.
Mitigation strategies for this vulnerability should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application. The most effective immediate solution involves proper escaping of all user-supplied content before rendering it in web pages, ensuring that any potentially malicious input is neutralized through proper HTML encoding. Organizations should implement Content Security Policy headers to limit script execution and prevent unauthorized code injection. Regular security audits and input validation testing should be conducted to identify similar vulnerabilities in other parts of the application. Additionally, implementing proper access controls and monitoring for unusual activities in the scheduling system can help detect exploitation attempts. The vulnerability also highlights the importance of keeping applications updated and following secure coding practices as outlined in OWASP Top Ten and other industry standards for preventing XSS attacks through proper input sanitization and output encoding mechanisms.