CVE-2026-25123
SSRF and Port Scanning via Unauthenticated tRPC in Homarr
Publication date: 2026-02-06
Last updated on: 2026-02-18
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| homarr | homarr | to 1.52.0 (exc) |
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?
The vulnerability exists in Homarr, an open-source dashboard, in versions prior to 1.52.0. A public and unauthenticated tRPC endpoint named widget.app.ping accepts an arbitrary URL and performs a server-side request to that URL. This behavior allows an attacker without authentication to make the Homarr server send outbound HTTP requests to any URL they choose.
This leads to Server-Side Request Forgery (SSRF), where the attacker can make the server interact with internal or external systems on their behalf. Additionally, the vulnerability enables a reliable port-scanning technique by analyzing the server's response status codes and timing, helping the attacker infer whether ports are open or closed.
How can this vulnerability impact me? :
This vulnerability can impact you by allowing an unauthenticated attacker to make the Homarr server send HTTP requests to arbitrary URLs. This can be exploited to scan internal network ports and services that are not normally accessible externally, potentially revealing sensitive information about your network infrastructure.
While the vulnerability does not directly allow data modification or denial of service, it can be used as a reconnaissance tool to gather information that could facilitate further attacks.
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?
To mitigate this vulnerability, upgrade Homarr to version 1.52.0 or later, where the issue has been fixed.