CVE-2026-96882 in lin-cms-spring-boot
Summary
by MITRE • 09/24/2026
A vulnerability was identified in TaleLin lin-cms-spring-boot up to 0.2.1. Affected by this vulnerability is the function searchBook of the file src/main/java/io/github/talelin/latticy/controller/v1/BookController.java of the component book Endpoint. The manipulation leads to improper authorization. It is possible to initiate the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
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Analysis
by VulDB Data Team • 09/24/2026
The vulnerability identified within TaleLin lin-cms-spring-boot versions up to 0.2.1 represents a critical failure in access control mechanisms, specifically affecting the searchBook function located in the BookController.java file of the book endpoint component. This flaw is classified as an improper authorization issue, which falls under the Common Weakness Enumeration category CWE-862: Missing Authorization Check. In a properly secured application, every request to a protected resource must be validated against the user's permissions and identity before processing. However, in this specific implementation of the lin-cms-spring-boot framework, the searchBook endpoint fails to adequately verify whether the requesting user possesses the necessary privileges to execute the operation or access the data being queried. This absence of robust authorization logic allows any authenticated, and potentially unauthenticated depending on broader configuration, actor to interact with sensitive backend operations without appropriate permission validation.
The operational impact of this vulnerability is significant because it enables remote attackers to bypass intended security restrictions. Since the exploit is publicly available, threat actors can leverage known techniques to manipulate requests directed at the book endpoint. This lack of proper access control may lead to unauthorized data exposure, where users retrieve information about books that they should not be able to view based on their role or status within the system. Furthermore, depending on how the underlying database queries are constructed and whether additional input validation is present, this authorization flaw could potentially serve as a vector for more severe attacks such as SQL injection if combined with other weaknesses, although the primary classification remains focused on access control failures. The ability to initiate these attacks remotely means that no physical proximity or local system access is required by the adversary, increasing the risk profile substantially in internet-facing deployments of this content management system.
The vendor's lack of response to early disclosure attempts exacerbates the security posture for organizations relying on this open-source framework. Without an official patch or update from TaleLin, administrators must rely on workarounds and defensive coding practices to mitigate the risk. Industry standards such as MITRE ATT&CK categorize similar behaviors under techniques related to privilege escalation or unauthorized access, emphasizing the need for strict enforcement of identity verification at every API endpoint. To address this vulnerability in the absence of a vendor patch, developers should implement explicit authorization checks within the searchBook method using Spring Security annotations like @PreAuthorize or custom interceptors that validate user roles against specific resource requirements. Additionally, applying principle of least privilege ensures that even if an attacker bypasses initial authentication layers, they are restricted to minimal necessary permissions. Regular security audits and static application security testing can help identify such missing authorization checks in other parts of the codebase before deployment.