CVE-2026-3163
Server-Side Request Forgery in SourceCodester URL Handler
Publication date: 2026-02-25
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 |
|---|---|---|
| remyandrade | website_link_extractor | 1.0 |
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-2026-3163 is a Server-Side Request Forgery (SSRF) vulnerability found in SourceCodester Website Link Extractor version 1.0. The vulnerability exists in the URL Handler component, specifically in the function file_get_contents, which retrieves the contents of a URL provided by the user without proper validation or filtering.
This flaw allows an attacker to craft malicious URLs that cause the server to send unauthorized requests to internal network resources, such as internal IP addresses, localhost, or sensitive endpoints like internal admin panels or cloud metadata services.
The attack can be initiated remotely and the vulnerability has been publicly disclosed with technical details and proof-of-concept exploits available.
How can this vulnerability impact me? :
This vulnerability can impact you by allowing attackers to perform unauthorized requests from the vulnerable server to internal or protected network resources.
Such unauthorized requests can lead to internal network enumeration, unauthorized access to sensitive information, and potential compromise of confidentiality, integrity, and availability of the affected system.
Because the exploit is easy to execute remotely and publicly available, attackers can leverage this vulnerability to gain insights or access to internal services that are otherwise protected.
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?
This vulnerability involves the manipulation of URLs processed by the file_get_contents function in the SourceCodester Website Link Extractor 1.0, allowing server-side request forgery (SSRF). Detection can focus on monitoring for unusual outbound HTTP requests to internal IP addresses, localhost, or sensitive endpoints such as cloud metadata services.
Network detection can include inspecting logs or using network monitoring tools to identify unexpected requests originating from the vulnerable server to internal resources.
Suggested commands or methods include:
- Using network packet capture tools like tcpdump or Wireshark to filter outbound HTTP requests from the server, e.g., `tcpdump -i eth0 host <server_ip> and tcp port 80`.
- Checking web server or application logs for requests containing suspicious URL parameters that might be used to exploit SSRF.
- Using curl or wget commands to test the application by sending crafted URLs that point to internal IP addresses or localhost to see if the server fetches those resources.
What immediate steps should I take to mitigate this vulnerability?
No official patch or fix has been provided for this vulnerability as of the disclosure date.
Immediate mitigation steps include:
- Disabling or restricting the use of the vulnerable function file_get_contents for fetching external URLs if possible.
- Implementing network-level restrictions such as firewall rules to prevent the vulnerable server from making unauthorized outbound requests to internal or sensitive IP addresses.
- Monitoring and logging outbound requests to detect and respond to suspicious activity.
- Considering replacing the affected product with a more secure alternative.