CVE-2026-107797 in Jivejdon
Summary
by MITRE • 10/09/2026
Jivejdon through 5.0 contains a reflected cross-site scripting vulnerability in application/message/postThread.jsp that allows attackers to inject script via the to and tag parameters. Attackers can send crafted links to authenticated users, breaking out of unencoded inline JavaScript string literals to execute arbitrary JavaScript in the victim's session.
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Analysis
by VulDB Data Team • 10/09/2026
The Jivejdon software platform through version 5.0 exhibits a critical reflected cross-site scripting vulnerability located within the application/message/postThread.jsp component. This security flaw stems from insufficient input validation and output encoding mechanisms when processing user-supplied data passed via HTTP request parameters, specifically the to and tag fields. The core technical deficiency lies in the server-side rendering logic which fails to properly sanitize or encode these inputs before embedding them into inline JavaScript string literals within the generated HTML response. Consequently, malicious actors can inject executable script payloads that are directly reflected back to the user's browser without being escaped by standard security filters such as HTML entity encoding or context-aware escaping for JavaScript contexts.
The operational impact of this vulnerability is significant because it allows attackers to execute arbitrary client-side scripts in the context of an authenticated victim’s session. By crafting deceptive links containing malicious payloads within the specified parameters, an attacker can trick a legitimate user into clicking them while logged into the Jivejdon application. Upon loading the compromised page, the browser interprets the injected code as part of the local JavaScript environment rather than static content. This breakout from unencoded inline string literals enables the execution of arbitrary commands that operate with the same privileges and permissions as the victim user. Such capabilities typically include stealing session cookies or authentication tokens, performing actions on behalf of the user without their consent, redirecting the user to phishing sites, or defacing the application interface.
From a classification perspective, this vulnerability aligns with CWE-79 Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting (XSS). Specifically, it represents a reflected XSS scenario where the malicious script is not stored on the server but is immediately returned in an HTTP response. In terms of adversary tactics and techniques, this exploit maps to MITRE ATT&CK technique T1059 Command and Scripting Interpreter under client-side execution, specifically leveraging browser-based scripting languages like JavaScript for initial access or credential harvesting. The attack vector relies heavily on social engineering elements such as phishing emails or malicious URLs delivered through instant messaging channels to induce the victim into triggering the payload.
Mitigation strategies must address both immediate remediation and long-term security posture improvements. Developers should implement strict input validation that rejects any unexpected characters in the to and tag parameters, adhering to a whitelist approach for allowed values where possible. More critically, output encoding must be applied contextually; data inserted into JavaScript string literals requires specific escaping sequences such as backslash-escaping quotes and ensuring proper handling of special characters like ampersands and less-than signs. Utilizing modern web frameworks that automatically handle context-aware encoding can significantly reduce the risk of similar flaws. Additionally, implementing a Content Security Policy (CSP) header with strict directives regarding script sources can mitigate the impact by preventing unauthorized scripts from executing even if they are injected into the DOM. Regular security code reviews and automated static application security testing focused on XSS patterns should be integrated into the development lifecycle to detect such vulnerabilities before deployment.