CVE-2026-2945
Server-Side Request Forgery in JeecgBoot 3.9.0 Upload Function
Publication date: 2026-02-22
Last updated on: 2026-04-29
Assigner: VulDB
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| jeecg | jeecg_boot | 3.9.0 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-918 | The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2026-2945 is a Server-Side Request Forgery (SSRF) vulnerability in JeecgBoot version 3.9.0, specifically affecting the /sys/common/uploadImgByHttp endpoint.
The vulnerability occurs because the fileUrl parameter, which is supposed to specify a remote image URL for the server to fetch and save, is not properly validated or restricted.
This allows an attacker to supply arbitrary URLs, including internal network addresses, causing the server to make unauthorized HTTP requests to internal services.
As a result, attackers can bypass network firewalls, retrieve sensitive internal data, and expose it by saving it as accessible static files.
How can this vulnerability impact me? :
This vulnerability can impact you by allowing attackers to access internal network resources that are normally protected by firewalls.
Attackers can retrieve sensitive information from internal services by forcing the server to make unauthorized requests.
The confidentiality, integrity, and availability of your system can be compromised due to this flaw.
Since the exploit is publicly available and can be launched remotely without local access, the risk of attack is significant.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
[{'type': 'paragraph', 'content': 'This vulnerability can be detected by monitoring or testing the /sys/common/uploadImgByHttp endpoint in JeecgBoot 3.9.0 for server-side request forgery attempts involving the fileUrl parameter.'}, {'type': 'paragraph', 'content': 'One way to detect exploitation attempts is to send crafted HTTP requests to the endpoint with various fileUrl values pointing to internal or external resources and observe if the server fetches these URLs.'}, {'type': 'paragraph', 'content': 'Example command using curl to test the vulnerability:'}, {'type': 'list_item', 'content': 'curl -X POST https://target-server/sys/common/uploadImgByHttp -H "Content-Type: application/json" -d \'{"fileUrl":"http://127.0.0.1:8000"}\''}, {'type': 'paragraph', 'content': 'If the server responds by fetching or saving the content from the specified URL, it indicates the presence of the SSRF vulnerability.'}, {'type': 'paragraph', 'content': 'Additionally, network monitoring tools can be used to detect unusual outbound HTTP requests from the server to internal IP addresses or unexpected destinations.'}] [1, 2]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include restricting or disabling the vulnerable /sys/common/uploadImgByHttp endpoint in JeecgBoot 3.9.0 to prevent exploitation.
Since no official vendor response or patch is available, consider replacing the affected component with an alternative product that does not contain this vulnerability.
Implement network-level controls such as firewall rules to block unauthorized outbound HTTP requests from the server to internal or sensitive network addresses.
Monitor server logs and network traffic for suspicious activity related to the fileUrl parameter or unexpected HTTP requests.