CVE-2026-2555
📋 TL;DR
A deserialization vulnerability in JeecgBoot 3.9.1 allows remote attackers to execute arbitrary code by manipulating the importDocumentFromZip function in the AI knowledge controller. This affects systems running JeecgBoot with the Retrieval-Augmented Generation component enabled. The vulnerability is remotely exploitable but requires complex attack execution.
💻 Affected Systems
- JeecgBoot
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, and lateral movement within the network.
Likely Case
Limited impact due to high exploit complexity, potentially causing service disruption or partial data exposure.
If Mitigated
Minimal impact with proper input validation, network segmentation, and least privilege controls in place.
🎯 Exploit Status
Attack is remotely launchable but described as highly complex and difficult to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Monitor the GitHub repository for updates and apply when released.
🔧 Temporary Workarounds
Disable vulnerable endpoint
allDisable or restrict access to the importDocumentFromZip function in AiragKnowledgeController
Modify application configuration to disable the endpoint or implement access controls
Implement input validation
allAdd strict input validation and sanitization for zip file processing
Implement whitelist validation for file types and content inspection
🧯 If You Can't Patch
- Implement network segmentation to isolate JeecgBoot instances from critical systems
- Deploy web application firewall (WAF) with deserialization attack detection rules
🔍 How to Verify
Check if Vulnerable:
Check if running JeecgBoot version 3.9.1 with the Retrieval-Augmented Generation component enabledCheck Version:
Check application.properties or pom.xml for version informationVerify Fix Applied:
Verify that the importDocumentFromZip function has been secured or disabled in newer versions📡 Detection & Monitoring
Log Indicators:
- Unusual file upload patterns to AI knowledge endpoints
- Java deserialization errors in application logs
Network Indicators:
- Suspicious POST requests to /airag/llm/importDocumentFromZip endpoint
SIEM Query:
source="jeecgboot-logs" AND (uri="/airag/llm/importDocumentFromZip" OR message="*deserialization*")