CVE-2026-86228 in JeecgBoot
Summary
by MITRE • 09/07/2026
A security vulnerability has been detected in JeecgBoot up to 3.9.3. This vulnerability affects the function exportXls of the file jeecg-boot/jeecg-boot-module/jeecg-boot-module-airag/src/main/java/org/jeecg/modules/airag/llm/controller/AiragModelController.java. Such manipulation of the argument credential leads to improper access controls. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 3.9.5 is able to resolve this issue. The name of the patch is a2be896f753936956ee6863b632b8e5a0231345c. You should upgrade the affected component.
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Analysis
by VulDB Data Team • 09/07/2026
A critical security vulnerability has been identified within JeecgBoot versions up to 3.9.3, specifically affecting the exportXls function located in the AiragModelController class of the jeecg-boot-module-airag module. This flaw stems from improper access controls associated with how the credential argument is manipulated during file export operations. The vulnerability allows an attacker who can interact with this endpoint to bypass intended security restrictions, potentially leading to unauthorized data exposure or system compromise. Because the affected component handles sensitive model configurations and exports related data, the implications for confidentiality are significant if exploited by a malicious actor.
The technical nature of this flaw aligns closely with CWE-284, which describes Improper Access Control vulnerabilities where an application fails to properly restrict access to resources based on user privileges or authentication status. In this specific context, the manipulation of the credential parameter suggests that the validation logic governing who can request and receive exported Excel files is insufficiently robust. An attacker could potentially forge or alter credentials in transit or within the request payload to gain elevated permissions, thereby accessing data intended for higher-privileged users only. This type of vulnerability often arises from inadequate input validation on authentication tokens or session identifiers passed as arguments to critical business logic functions.
From an operational perspective, this vulnerability poses a severe risk due its remote exploitability and public disclosure status. The fact that the exploit has been disclosed publicly means that automated scanning tools and malicious actors can readily identify vulnerable instances of JeecgBoot deployed in production environments. An attacker leveraging this flaw could extract sensitive business intelligence contained within exported spreadsheets, such as user lists, configuration details, or proprietary data managed by the AI model integration features. The availability of a public exploit significantly lowers the barrier to entry for attackers, increasing the likelihood of successful compromise against unpatched systems.
This vulnerability also maps to specific techniques in the MITRE ATT&CK framework, particularly those related to Initial Access and Credential Access. It may be classified under T1078 Valid Accounts if it involves stealing or forging credentials, or potentially T1530 Data from Local System if it leads to unauthorized data exfiltration via the export function. The remote nature of the attack vector means that no physical access or prior local foothold is required for exploitation, making it a high-priority target for threat actors seeking quick wins against organizations using this framework.
To mitigate this risk, immediate action is required by upgrading JeecgBoot to version 3.9.5 or later. The patch identified as commit hash a2be896f753936956ee6863b632b8e5a0231345c addresses the underlying access control logic within the exportXls method, ensuring that credential validation is performed correctly before allowing data exports. Organizations should verify their deployment environments for this specific version and apply the update promptly. Additionally, implementing network-level controls such as Web Application Firewalls can provide a temporary layer of defense by monitoring for anomalous patterns in requests to the AiragModelController endpoint until the patch is fully deployed across all instances.