CVE-2026-107792 in Jivejdon
Summary
by MITRE • 10/09/2026
Jivejdon from commit d58a36b0 through commit ee67a65e contains a missing authorization vulnerability in UpdateThreadToForumAction that allows authenticated users to move other users' threads. Attackers can send crafted threadId and forumId values to /message/threadToForum/save to relocate any reply-less thread into an arbitrary forum.
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Analysis
by VulDB Data Team • 10/09/2026
The identified security flaw resides within the Jivejdon application, specifically affecting code versions ranging from commit d58a36b0 through ee67a65e. This vulnerability is classified as a missing authorization issue within the UpdateThreadToForumAction component. The core technical deficiency lies in the server-side validation logic that governs thread relocation operations. When an authenticated user initiates a request to move a discussion thread, the application fails to verify whether the requesting user possesses administrative privileges or ownership rights over the target thread and destination forum. This lack of access control enforcement allows any logged-in individual to manipulate system state by altering the association between threads and forums without proper permission checks.
The operational mechanism involves sending crafted HTTP requests to the /message/threadToForum/save endpoint with specific parameters, namely a valid threadId and an arbitrary forumId. The application processes these inputs directly from the client side or session context without cross-referencing them against database records that define user permissions for those specific entities. Consequently, an attacker can successfully relocate any reply-less thread into a forum of their choosing. This capability bypasses standard workflow constraints where only moderators or administrators should have the authority to reorganize discussion structures. The restriction to reply-less threads suggests that the underlying logic may rely on simpler state checks that do not account for complex interaction histories, but this limitation does not mitigate the severity of the authorization bypass for static content management tasks.
From a risk perspective, this vulnerability enables unauthorized modification of application data and structure, which falls under CWE-269: Improper Privilege Management. The ability to move threads arbitrarily can lead to information disclosure if sensitive discussions are moved to publicly accessible forums or cause operational disruption by misplacing critical community content in inappropriate categories. This behavior aligns with the ATT&CK technique T1078, Valid Accounts, as it leverages legitimate authentication credentials to perform actions outside their intended scope. Furthermore, it reflects CWE-923: Improper Restriction of Excessive Authentication Attempts if used for enumeration, though primarily it represents a direct privilege escalation through functional abuse rather than credential compromise.
The impact extends beyond simple data misplacement. In community-driven platforms like Jivejdon, the integrity of forum organization is crucial for information retrieval and user trust. Unauthorized thread relocation can confuse users seeking specific topics, potentially leading to missed communications or exposure of private discussions if moved to public spaces. Additionally, this flaw could be chained with other vulnerabilities to escalate privileges further or disrupt service availability by flooding forums with irrelevant content. The lack of audit trails distinguishing between authorized administrative moves and unauthorized user actions complicates forensic analysis post-incident.
To mitigate this vulnerability, developers must implement strict server-side authorization checks within the UpdateThreadToForumAction class before processing any thread relocation requests. This involves verifying that the authenticated user has explicit permission to modify the specific thread identified by the provided threadId and is authorized to add content to the target forum specified by the forumId. Implementing role-based access control ensures that only users with moderator or administrator roles can execute such structural changes. Additionally, introducing a secondary verification step where the system confirms ownership of the thread prior to allowing movement adds an extra layer of security against privilege escalation attempts. Regular code reviews focusing on input validation and permission checks are essential to prevent similar authorization flaws in other modules handling sensitive data modifications.