CVE-2025-7759
📋 TL;DR
This CVE-2025-7759 is a Server-Side Request Forgery (SSRF) vulnerability in thinkgem JeeSite's UEditor image grabber component. Attackers can manipulate the 'Source' parameter to make the server send unauthorized requests to internal systems. This affects JeeSite versions up to 5.12.0 with the vulnerable component enabled.
💻 Affected Systems
- thinkgem JeeSite
📦 What is this software?
Jeesite by Jeesite
⚠️ Risk & Real-World Impact
Worst Case
Attackers could access internal services, exfiltrate sensitive data, or pivot to attack other internal systems through the vulnerable server.
Likely Case
Information disclosure from internal services, potential data exfiltration, or scanning of internal network resources.
If Mitigated
Limited impact if proper network segmentation and input validation are in place, though SSRF risks remain.
🎯 Exploit Status
Public exploit code exists on GitHub, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Fixed in commit 1c5e49b0818037452148e0f8ff69ed04cb8fefdc
Vendor Advisory: https://github.com/thinkgem/jeesite5/issues/27
Restart Required: Yes
Instructions:
1. Update to the latest JeeSite version containing commit 1c5e49b. 2. Apply the patch from the GitHub repository. 3. Restart the JeeSite application server.
🔧 Temporary Workarounds
Disable UEditor Image Grabber
allDisable the vulnerable UEditor image grabber component if not required.
Modify JeeSite configuration to disable UEditor image grabber functionality
Network Segmentation
allRestrict outbound network access from the JeeSite server to only necessary services.
Configure firewall rules to limit outbound connections from JeeSite server
🧯 If You Can't Patch
- Implement strict input validation for the 'Source' parameter to reject malicious URLs
- Deploy a web application firewall (WAF) with SSRF protection rules
🔍 How to Verify
Check if Vulnerable:
Check if JeeSite version is 5.12.0 or earlier and UEditor image grabber is enabled.Check Version:
Check JeeSite version in application properties or via admin interfaceVerify Fix Applied:
Verify that commit 1c5e49b is present in the codebase and test SSRF attempts are blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from JeeSite server
- Requests to internal IP addresses or localhost from UEditor component
Network Indicators:
- Outbound connections from JeeSite server to unexpected internal services
- HTTP requests with manipulated Source parameters
SIEM Query:
source_ip="JeeSite_server" AND (dest_ip IN internal_ranges OR dest_ip=127.0.0.1) AND uri_path CONTAINS "ueditor"🔗 References
- https://github.com/MentalityXt/jeesite_ssrf/tree/main
- https://github.com/thinkgem/jeesite5/commit/1c5e49b0818037452148e0f8ff69ed04cb8fefdc
- https://github.com/thinkgem/jeesite5/issues/27
- https://vuldb.com/?ctiid.316749
- https://vuldb.com/?id.316749
- https://vuldb.com/?submit.615769
- https://github.com/thinkgem/jeesite5/issues/27
