CVE-2026-107800 in Jivejdon
Summary
by MITRE • 10/09/2026
Jivejdon through 5.0 contains a stored cross-site scripting vulnerability that allows authenticated attackers to inject script into private short messages because receiveshortmessage.jsp renders unfiltered message bodies. Attackers can send a short message containing script, which ToolsUtil.convertURL() passes through unchanged, to execute code in the recipient's browser when opened.
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Analysis
by VulDB Data Team • 10/09/2026
The identified vulnerability represents a classic stored cross-site scripting flaw within Jivejdon versions up to 5.0, specifically targeting the private messaging subsystem of the application. This security defect arises from an insufficient input validation and output encoding mechanism on the server side. When an authenticated user composes and sends a short message containing malicious JavaScript code, the system accepts this payload without sanitization or proper escaping. The core technical failure occurs in the rendering phase when another user opens their private inbox to read messages. The specific component responsible for displaying these messages is receiveshortmessage.jsp, which directly renders the unfiltered content of the message body into the HTML response sent to the client browser. Because the application fails to distinguish between legitimate text and executable script tags within the stored data, it treats the injected code as valid markup rather than string data.
The operational impact of this vulnerability is significant because it allows for persistent attacks that do not require social engineering tricks like phishing links to be clicked repeatedly; instead, a single interaction with the inbox triggers the exploit. An attacker who has obtained authenticated access can embed malicious scripts in private messages sent to specific targets or broadcast them if permissions allow broader visibility. When the victim views the message, their browser executes the injected JavaScript within the context of the Jivejdon application domain. This enables the attacker to perform actions such as stealing session cookies, hijacking user sessions, performing unauthorized administrative actions on behalf of the victim, or defacing the interface. Since private messages are often perceived by users as secure and confidential communications, victims may be less vigilant regarding content inspection, thereby increasing the likelihood of successful exploitation.
From a classification perspective, this vulnerability aligns with CWE-79, which describes Improper Neutralization of Input During Web Page Generation commonly known as Cross-site Scripting. More specifically, it falls under Stored XSS where the malicious payload is saved on the target server and later retrieved by other users. In terms of adversary tactics, this behavior corresponds to techniques found in the MITRE ATT&CK framework related to Collection via Browser Capture or Account Manipulation through session hijacking. The attack vector relies on authenticated access, which classifies it as an insider threat scenario or a result of compromised credentials rather than an unauthenticated remote code execution flaw.
Mitigation strategies must address both immediate remediation and long-term architectural improvements. Immediately, the development team should implement strict output encoding for all dynamic content rendered in receiveshortmessage.jsp using context-aware escaping techniques appropriate for HTML body contexts. Input validation alone is insufficient; even if input filtering were applied to block script tags, attackers can often bypass simple filters using obfuscation or alternative event handlers like onerror or onload attributes embedded within image or div elements. Therefore, relying solely on blacklisting dangerous keywords is not recommended due to the high risk of false negatives and subsequent vulnerabilities. Instead, implementing a robust Content Security Policy (CSP) header can significantly reduce the impact by restricting where scripts are allowed to load from and preventing inline script execution unless explicitly whitelisted. Additionally, enforcing HttpOnly flags on session cookies prevents JavaScript access to these tokens, thereby mitigating the risk of session hijacking even if XSS is successfully executed. Upgrading to a patched version that addresses this rendering flaw or applying manual code patches to ensure all user-supplied data is properly encoded before being written into the HTML response are essential steps for securing the application against this class of attacks.