CVE-2026-2555 in JeecgBoot
Summary
by MITRE • 02/16/2026
A weakness has been identified in JeecgBoot 3.9.1. This vulnerability affects the function importDocumentFromZip of the file org/jeecg/modules/airag/llm/controller/AiragKnowledgeController.java of the component Retrieval-Augmented Generation. Executing a manipulation can lead to deserialization. The attack can be launched remotely. Attacks of this nature are highly complex. It is stated that the exploitability is difficult. The project was informed of the problem early through an issue report but has not responded yet.
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Analysis
by VulDB Data Team • 02/20/2026
The vulnerability identified as CVE-2026-2555 resides within the JeecgBoot 3.9.1 framework, specifically targeting the importDocumentFromZip function located in the AiragKnowledgeController.java file. This weakness falls under the category of deserialization vulnerabilities, which represent a critical class of security flaws that have been extensively documented in the CWE database under CWE-502. The affected component is part of the Retrieval-Augmented Generation functionality, indicating this vulnerability impacts systems that rely on document processing and knowledge base management capabilities. The vulnerability's presence in a controller component suggests it operates at the application layer, potentially exposing the entire system to remote code execution risks when malicious data is processed through the document import mechanism.
The technical flaw manifests when the importDocumentFromZip function processes zip file inputs without adequate validation or sanitization of the contained data. This deserialization vulnerability allows attackers to craft malicious zip archives containing specially crafted serialized objects that, when processed by the vulnerable application, can trigger unintended code execution. The attack vector is classified as remote, meaning malicious actors can exploit this weakness without requiring physical access to the system or direct network connection to the application's internal components. The complexity of exploitation is noted as high, indicating that successful exploitation requires significant technical expertise and may involve multiple attack steps to bypass security controls. This difficulty level suggests that the vulnerability may require sophisticated attack techniques such as gadget chaining or specific environment conditions to achieve successful exploitation.
The operational impact of this vulnerability extends beyond simple data compromise, as it can potentially enable full system compromise when exploited. Attackers who successfully exploit this weakness could gain unauthorized access to the application server, potentially leading to data theft, system infiltration, or even complete system takeover. The vulnerability affects the Retrieval-Augmented Generation component, which typically processes large volumes of documents and knowledge base content, making it particularly dangerous in environments where sensitive information is stored and retrieved. The lack of response from the project maintainers since early reporting indicates a potential delay in patch development or deployment, leaving affected systems exposed to active exploitation attempts.
Security professionals should consider this vulnerability in the context of the MITRE ATT&CK framework, particularly under the T1059.007 technique related to scripting and T1203 attack pattern for exploitation of remote services. The vulnerability's remote nature aligns with ATT&CK's focus on network-based exploitation techniques. Organizations using JeecgBoot 3.9.1 should implement immediate mitigations including network segmentation to isolate vulnerable systems, implementing strict input validation for zip file processing, and deploying web application firewalls to detect and block malicious payloads. The lack of response from the project team suggests that organizations may need to consider alternative solutions or temporary workarounds until official patches are released. Additionally, regular monitoring for exploitation attempts and implementing robust logging mechanisms around document import functions can help detect potential attacks. The vulnerability highlights the importance of secure deserialization practices and proper input validation in web applications, particularly those handling user-provided content or external data sources.