GHSA-3F6H-2HRP-W5WX

Vulnerability from github – Published: 2026-04-10 17:32 – Updated: 2026-04-10 19:46
VLAI?
Summary
@sveltejs/kit: Unvalidated redirect in handle hook causes Denial-of-Service
Details

redirect, when called from inside the handle server hook with a location parameter containing characters that are invalid in a HTTP header, will cause an unhandled TypeError. This could result in DoS on some platforms, especially if the location passed to redirect contains unsanitized user input.

Severity ?
6.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.57.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@sveltejs/kit"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.57.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-40074"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-755"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-10T17:32:00Z",
    "nvd_published_at": "2026-04-10T17:17:12Z",
    "severity": "MODERATE"
  },
  "details": "`redirect`, when called from inside the `handle` server hook with a location parameter containing characters that are invalid in a HTTP header, will cause an unhandled `TypeError`. This could result in DoS on some platforms, especially if the location passed to `redirect` contains unsanitized user input.",
  "id": "GHSA-3f6h-2hrp-w5wx",
  "modified": "2026-04-10T19:46:47Z",
  "published": "2026-04-10T17:32:00Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/sveltejs/kit/security/advisories/GHSA-3f6h-2hrp-w5wx"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-40074"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sveltejs/kit/commit/10d7b44425c3d9da642eecce373d0c6ef83b4fcd"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/sveltejs/kit"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sveltejs/kit/releases/tag/%40sveltejs%2Fkit%402.57.1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/sveltejs/kit/releases/tag/@sveltejs/kit@2.57.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:L",
      "type": "CVSS_V4"
    }
  ],
  "summary": "@sveltejs/kit: Unvalidated redirect in handle hook causes Denial-of-Service"
}


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