| Package | Affected versions | Patched versions |
|---|---|---|
| fastify-static | ≥ 4.2.4, < 4.4.1 | 4.4.1 |
| fastify-static | ≥ 4.2.4, < 4.4.1 | 4.4.1 |
A redirect vulnerability in the fastify-static module allows remote attackers to redirect Mozilla Firefox users to arbitrary websites via a double slash // followed by a domain: http://localhost:3000//a//youtube.com/%2e%2e%2f%2e%2e.
A DOS vulnerability is possible if the URL contains invalid characters curl --path-as-is "http://localhost:3000//^/.."
The issue shows up on all the fastify-static applications that set redirect: true option. By default, it is false.
The issue has been patched in [email protected]
If updating is not an option, you can sanitize the input URLs using the rewriteUrl server option.
If you have any questions or comments about this advisory:
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