GHSA-R666-8GJF-4V5F

Vulnerability from github – Published: 2026-02-03 20:49 – Updated: 2026-02-04 17:45
VLAI?
Summary
Qwik City has a CSRF Protection Bypass via Content-Type Header Validation
Details

Summary

Qwik City’s server-side request handler inconsistently interprets HTTP request headers, which can be abused by a remote attacker to circumvent form submission CSRF protections using specially crafted or multi-valued Content-Type headers.

Impact

A vulnerability in checkCSRF lets an attacker bypass Origin-based CSRF checks by using malformed or multi-valued Content-Type headers. Exploitation requires the CORS preflight to succeed (so it’s blocked if preflight is denied) and is possible when the application accepts cross-origin requests or via non-browser clients. Impact varies with server CORS and cookie policies and may enable unauthorized state changes.

Severity ?
5.9 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N
Show details on source website
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@builder.io/qwik-city"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.19.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-25151"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-352"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-02-03T20:49:58Z",
    "nvd_published_at": "2026-02-03T22:16:30Z",
    "severity": "MODERATE"
  },
  "details": "### Summary\nQwik City\u2019s server-side request handler inconsistently interprets HTTP request headers, which can be abused by a remote attacker to circumvent form submission CSRF protections using specially crafted or multi-valued Content-Type headers.\n\n### Impact\nA vulnerability in checkCSRF lets an attacker bypass Origin-based CSRF checks by using malformed or multi-valued Content-Type headers. Exploitation requires the CORS preflight to succeed (so it\u2019s blocked if preflight is denied) and is possible when the application accepts cross-origin requests or via non-browser clients. Impact varies with server CORS and cookie policies and may enable unauthorized state changes.",
  "id": "GHSA-r666-8gjf-4v5f",
  "modified": "2026-02-04T17:45:47Z",
  "published": "2026-02-03T20:49:58Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/QwikDev/qwik/security/advisories/GHSA-r666-8gjf-4v5f"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25151"
    },
    {
      "type": "WEB",
      "url": "https://github.com/QwikDev/qwik/commit/eebf610e04cc3a690f11e10191d09ff0fca1c7ed"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/QwikDev/qwik"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Qwik City has a CSRF Protection Bypass via Content-Type Header Validation"
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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