CVE-2026-30953
Server-Side Request Forgery in LinkAce Link Creation Endpoint
Publication date: 2026-03-10
Last updated on: 2026-03-17
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| linkace | linkace | to 2.0.0 (inc) |
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?
This vulnerability exists in LinkAce, a self-hosted archive for collecting website links. When a user creates a link using the POST /links endpoint, the server fetches HTML metadata from the provided URL. However, the validation rules for creating links do not include a check to block requests to private IP addresses or internal network resources (NoPrivateIpRule). Although the project has a NoPrivateIpRule class, it is only applied in a different part of the application (FetchController.php) and not in the main link creation process. This allows an attacker to make the server perform requests to internal network addresses, Docker service hostnames, or cloud metadata endpoints.
How can this vulnerability impact me? :
This vulnerability can allow an attacker to make the server send requests to internal network resources that are normally inaccessible from outside. This can lead to unauthorized access to sensitive internal services, exposure of cloud metadata endpoints, or interaction with Docker service hostnames. Such actions can result in information disclosure or further exploitation within the internal network.
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?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know