CVE-2026-107796 in Jivejdon
Summary
by MITRE • 10/09/2026
Jivejdon from commit 5489372d through commit ee67a65e contains a reflected cross-site scripting vulnerability in application/query/taggedThreadList.jsp that allows unauthenticated attackers to inject script via unencoded tagID and count parameters. Attackers can craft a link with a script-closing payload in tagID or count, triggered when start exceeds zero, to execute JavaScript in victims' browsers.
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Analysis
by VulDB Data Team • 10/09/2026
The vulnerability identified within the Jivejdon software versions spanning from commit 5489372d through ee67a65e represents a critical security flaw classified as a reflected cross-site scripting issue. This specific weakness resides in the application/query/taggedThreadList.jsp component, which serves as an endpoint for processing queries related to tagged threads within the platform. The core technical deficiency lies in the inadequate sanitization and encoding of user-supplied input parameters before they are rendered back into the HTTP response. Specifically, the tagID and count parameters are accepted from unauthenticated users without proper validation against script injection patterns. When these inputs contain malicious JavaScript payloads, particularly those designed to close existing HTML tags or attributes using script-closing sequences, the application fails to neutralize them, allowing the code to execute directly in the context of the victim's browser session.
From a technical perspective, this vulnerability exploits the lack of output encoding on dynamic content generated by the server based on user input. The attack vector is triggered when the start parameter exceeds zero, indicating that specific query conditions must be met for the reflection point to activate. An attacker can construct a malicious URL containing encoded script tags within the tagID or count fields. When an unsuspecting user clicks this link while authenticated to the Jivejdon platform, their browser interprets the injected code as legitimate content from the trusted domain. This allows the execution of arbitrary JavaScript commands under the security privileges of that domain, effectively bypassing same-origin policies and enabling actions such as session hijacking, credential theft via keyloggers, or defacement of the user interface.
The operational impact of this reflected cross-site scripting vulnerability is significant due to its potential for social engineering attacks. Since the payload is delivered through a crafted link, it relies on tricking users into visiting malicious URLs, often disguised as legitimate forum threads or query results. Once executed, the injected script can steal session cookies, which are frequently used by web applications to maintain user authentication state. This could lead to unauthorized access to other users' accounts, allowing attackers to impersonate victims, read private messages, post spam content, or manipulate data within the application. Furthermore, because the vulnerability exists in a publicly accessible endpoint without requiring prior authentication for exploitation, it presents a low-barrier entry point for automated scanning tools and opportunistic attacks targeting instances of this software version.
To mitigate this risk, immediate remediation is required by updating Jivejdon to a patched version that addresses these input validation flaws. In the interim, administrators should implement strict input validation on both client and server sides, ensuring that special characters in parameters like tagID and count are HTML-encoded or otherwise neutralized before being processed. Additionally, deploying Web Application Firewalls with rules capable of detecting common cross-site scripting patterns can provide a layer of defense against exploitation attempts. Enabling Content Security Policy headers to restrict the sources from which scripts can be executed may also limit the impact if an injection occurs by preventing inline script execution or loading resources only from trusted domains. Regular security audits and code reviews focusing on output encoding practices are essential to prevent similar vulnerabilities in future development cycles, aligning with industry standards such as CWE-79 for improper neutralization of input during web page generation and MITRE ATT&CK techniques related to client-side injection attacks.