CVE-2025-66415

Description

### Summary By crafting a malicious URL, an attacker could access routes that are not allowed, even though the `reply.from` is defined for specific routes in `@fastify/reply-from`. ### Details An attacker can bypass the route defined by the `@fastify/reply-from` package by adding a `..` symbol, which, for `curl` version `8.7.1`, is `%2e%2e`. ### Impact Everyone is using this package with the routes option to protect a 3rd-party resource.

Affected packages (1)

• npm/@fastify/reply-fromfrom 0, < 12.5.0

CVSS scores

References (4)

• ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2025-66415
• PATCHhttps://github.com/fastify/fastify-reply-from
• WEBhttps://github.com/fastify/fastify-reply-from/commit/4d9795cd5b57a36756d37b7f036eae369f69fa66
• WEBhttps://github.com/fastify/fastify-reply-from/security/advisories/GHSA-2q7r-29rg-6m5h