CVE-2025-66415
BaseFortify
Publication date: 2025-12-01
Last updated on: 2026-02-06
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| fastify | reply-from | to 12.4.0 (exc) |
| fastify | reply-from | 12.5.0 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-441 | The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the original source of the request before forwarding the request to an external actor that is outside of the product's control sphere. This causes the product to appear to be the source of the request, leading it to act as a proxy or other intermediary between the upstream component and the external actor. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
The vulnerability in fastify-reply-from prior to version 12.5.0 allows an attacker to craft a malicious URL to access routes that should be restricted, bypassing the intended route restrictions defined in the plugin. This means unauthorized access to certain server routes could occur.
How can this vulnerability impact me? :
This vulnerability can lead to unauthorized access to server routes that are meant to be restricted, potentially exposing sensitive data or functionality to attackers. It could compromise the security of your application by allowing attackers to reach parts of the system they should not have access to.
What immediate steps should I take to mitigate this vulnerability?
Upgrade the fastify-reply-from plugin to version 12.5.0 or later, as this version contains the fix for the vulnerability.