Executive Summary

CVE-2026-2111 is a path traversal vulnerability found in JeecgBoot versions up to 3.9.0, specifically in the Retrieval-Augmented Generation module within the file /airag/knowledge/doc/edit.

The vulnerability arises from improper handling of the filePath argument, which allows an attacker to manipulate the pathname input to traverse outside the intended restricted directory.

This improper input validation enables remote attackers to access arbitrary local files outside the web root directory, potentially exposing sensitive information.

The issue is classified under CWE-22 (Improper Limitation of a Pathname to a Restricted Directory) and is exploitable remotely without authentication.

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Impact Analysis

This vulnerability can lead to unauthorized disclosure of sensitive information by allowing attackers to read arbitrary files on the affected system.

Because the attacker can remotely exploit this issue without authentication, it increases the risk of data exposure and confidentiality breaches.

The exploit is publicly available and considered easy to execute, which raises the likelihood of attacks.

No known mitigations or patches have been provided by the vendor, so affected systems remain vulnerable unless the component is replaced or other protective measures are implemented.

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Compliance Impact

I don't know

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Detection Guidance

[{'type': 'paragraph', 'content': 'This vulnerability can be detected by testing the affected endpoint for path traversal attempts, specifically targeting the /airag/knowledge/doc/edit file in JeecgBoot versions up to 3.9.0.'}, {'type': 'paragraph', 'content': 'Since the vulnerability involves manipulation of the filePath argument to traverse directories, detection can involve sending crafted requests with directory traversal sequences such as "../" in the filePath parameter and observing if unauthorized files outside the intended directory are accessed.'}, {'type': 'paragraph', 'content': 'Example commands using curl to test the vulnerability might include:'}, {'type': 'list_item', 'content': 'curl -X POST "http://target-server/airag/knowledge/doc/edit" -d \'{"filePath":"../../../../etc/passwd"}\' -H "Content-Type: application/json"'}, {'type': 'list_item', 'content': 'curl -X POST "http://target-server/airag/knowledge/doc/edit" -d \'{"filePath":"..%2F..%2F..%2F..%2Fetc%2Fpasswd"}\' -H "Content-Type: application/json"'}, {'type': 'paragraph', 'content': 'Monitoring network traffic for suspicious requests containing directory traversal patterns in the filePath parameter can also help detect exploitation attempts.'}] [1, 3]

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Mitigation Strategies

[{'type': 'paragraph', 'content': 'Immediate mitigation steps include restricting or disabling access to the vulnerable /airag/knowledge/doc/edit endpoint if possible.'}, {'type': 'paragraph', 'content': 'Since no official fixes or mitigations have been provided by the vendor, consider the following actions:'}, {'type': 'list_item', 'content': 'Implement web application firewall (WAF) rules to block requests containing directory traversal sequences such as "../" in the filePath parameter.'}, {'type': 'list_item', 'content': 'Restrict access to the affected module to trusted users or internal networks only.'}, {'type': 'list_item', 'content': 'Monitor logs for suspicious activity targeting the vulnerable endpoint.'}, {'type': 'list_item', 'content': 'Consider replacing the affected JeecgBoot component with an alternative product that is not vulnerable.'}] [1]

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