CVE-2026-2111 is a path traversal vulnerability identified in JeecgBoot, an open-source rapid development platform, affecting all versions up to 3.9.0. The vulnerability resides in the Retrieval-Augmented Generation Module, particularly in the /airag/knowledge/doc/edit component. Attackers can manipulate the filePath parameter to traverse directories outside the intended scope, potentially accessing sensitive files on the server. This flaw is exploitable remotely without requiring authentication or user interaction, increasing its risk profile. The vulnerability has a CVSS 4.0 score of 5.3, indicating medium severity, with an attack vector of network, low attack complexity, no privileges required, and no user interaction needed. The vendor was notified early but has not issued a patch or response, and no known exploits have been detected in the wild to date. The lack of vendor response and public exploit availability means organizations must proactively address this issue. Path traversal vulnerabilities can lead to unauthorized disclosure of sensitive data, configuration files, or credentials, which can be leveraged for further attacks or system compromise. Given the nature of JeecgBoot as a development platform, affected deployments may include enterprise applications and internal tools, increasing the potential impact if exploited.

The primary impact of this vulnerability is unauthorized access to files on the affected server, which can lead to disclosure of sensitive information such as configuration files, source code, credentials, or other protected data. This can compromise confidentiality and potentially facilitate further attacks like privilege escalation or lateral movement within the network. Since the vulnerability is remotely exploitable without authentication or user interaction, attackers can scan and exploit vulnerable instances at scale. Organizations relying on JeecgBoot for internal or external applications risk data breaches and operational disruption. The medium severity score reflects that while the vulnerability does not directly allow code execution or denial of service, the information disclosure can have serious downstream consequences. The absence of vendor patches and public exploits increases the urgency for organizations to implement mitigations. If exploited in sensitive environments, such as government or critical infrastructure sectors, the impact could be significant, including regulatory penalties and reputational damage.

1. Immediate mitigation should include restricting access to the /airag/knowledge/doc/edit endpoint via network controls such as firewalls or web application firewalls (WAF) to limit exposure to trusted IPs only. 2. Implement input validation and sanitization on the filePath parameter to prevent directory traversal sequences (e.g., ../) from being processed. 3. Employ least privilege principles on the file system permissions to ensure the application process cannot access sensitive directories or files outside its intended scope. 4. Monitor logs for suspicious requests containing path traversal patterns targeting the vulnerable endpoint. 5. If possible, upgrade to a patched version once the vendor releases a fix or apply community-provided patches or workarounds. 6. Conduct a thorough security review of all modules handling file paths to identify and remediate similar issues. 7. Consider deploying runtime application self-protection (RASP) or enhanced endpoint detection to detect and block exploitation attempts. 8. Educate development teams on secure coding practices related to file handling to prevent recurrence.