CVE-2024-6986 in lollms-webui
Summary
by MITRE • 03/20/2025
A Cross-site Scripting (XSS) vulnerability exists in the Settings page of parisneo/lollms-webui version 9.8. The vulnerability is due to the improper use of the 'v-html' directive, which inserts the content of the 'full_template' variable directly as HTML. This allows an attacker to execute malicious JavaScript code by injecting a payload into the 'System Template' input field under main configurations.
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Analysis
by VulDB Data Team • 03/20/2025
The vulnerability described in CVE-2024-6986 represents a critical cross-site scripting flaw within the parisneo/lollms-webui application version 9.8. This security weakness resides specifically within the Settings page functionality, where user-controlled input is improperly handled, creating an avenue for malicious code execution. The flaw stems from the application's reliance on the v-html directive, a Vue.js feature designed to render HTML content dynamically, but when misapplied, it becomes a vector for code injection attacks.
The technical implementation of this vulnerability occurs through the improper sanitization of user input within the 'System Template' configuration field. When administrators or users input content into this field, the application directly incorporates the provided text into the HTML DOM without adequate validation or sanitization processes. This direct insertion pattern violates fundamental web security principles and creates a persistent XSS vulnerability that can be exploited by malicious actors. The 'full_template' variable serves as the conduit through which attacker payloads are executed, bypassing normal input validation mechanisms that should prevent such code injection scenarios.
The operational impact of this vulnerability extends beyond simple script execution, as it provides attackers with the ability to manipulate the web application's behavior in potentially severe ways. An attacker could inject malicious JavaScript code that executes within the context of other users' sessions, potentially leading to session hijacking, data theft, or unauthorized access to sensitive configuration settings. The vulnerability affects the core administrative functionality of the application, making it particularly dangerous for environments where the webui serves as a management interface for critical systems. This type of vulnerability can be leveraged to establish persistent access or to perform actions that compromise the integrity of the entire application environment.
Security mitigations for CVE-2024-6986 should focus on implementing proper input validation and output encoding mechanisms to prevent the direct insertion of user-controlled content into HTML contexts. The application should avoid using v-html directives with unsanitized input, instead employing proper sanitization libraries or built-in escaping mechanisms that prevent script execution. Additionally, implementing content security policies and input validation at multiple layers can provide defense-in-depth measures against similar vulnerabilities. This issue aligns with CWE-79, which specifically addresses cross-site scripting vulnerabilities, and can be mapped to ATT&CK technique T1059.007 for script execution via web interfaces. Organizations should also consider implementing regular security testing and code reviews to identify similar patterns that could introduce similar vulnerabilities in other parts of the application stack.