ghsa-2q7r-29rg-6m5h
Vulnerability from github
Published
2025-12-02 00:38
Modified
2025-12-02 00:38
Severity ?
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Summary
fastify-reply-from affected by bypass of reply forwarding
Details

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.

Show details on source website

To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 12.4.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@fastify/reply-from"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "12.5.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-66415"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-441"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-12-02T00:38:57Z",
    "nvd_published_at": "2025-12-01T23:15:54Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\nBy 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`.\n\n### Details\n\nAn 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`.\n\n### Impact\n\nEveryone is using this package with the routes option to protect a 3rd-party resource.",
  "id": "GHSA-2q7r-29rg-6m5h",
  "modified": "2025-12-02T00:38:57Z",
  "published": "2025-12-02T00:38:57Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/fastify/fastify-reply-from/security/advisories/GHSA-2q7r-29rg-6m5h"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-66415"
    },
    {
      "type": "WEB",
      "url": "https://github.com/fastify/fastify-reply-from/commit/4d9795cd5b57a36756d37b7f036eae369f69fa66"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/fastify/fastify-reply-from"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "fastify-reply-from affected by bypass of reply forwarding"
}


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