GHSA-QM9P-F9J5-W83W

Vulnerability from github – Published: 2025-09-17 21:30 – Updated: 2026-04-13 18:49
VLAI?
Summary
Parcel has an Origin Validation Error vulnerability
Details

parcel versions 1.6.1 and above have an Origin Validation Error vulnerability. Malicious websites can send XMLHTTPRequests to the application's development server and read the response to steal source code when developers visit them. Version 2.16.4 supports a --no-cors option which disables CORS headers in the dev server.

Severity ?
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2.16.3"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@parcel/reporter-dev-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1.6.1"
            },
            {
              "fixed": "2.16.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-56648"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-346"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-09-18T17:15:13Z",
    "nvd_published_at": "2025-09-17T19:15:46Z",
    "severity": "MODERATE"
  },
  "details": "parcel versions 1.6.1 and above have an Origin Validation Error vulnerability. Malicious websites can send XMLHTTPRequests to the application\u0027s development server and read the response to steal source code when developers visit them. Version 2.16.4 supports a `--no-cors` option which disables CORS headers in the dev server.",
  "id": "GHSA-qm9p-f9j5-w83w",
  "modified": "2026-04-13T18:49:40Z",
  "published": "2025-09-17T21:30:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-56648"
    },
    {
      "type": "WEB",
      "url": "https://github.com/parcel-bundler/parcel/issues/10216"
    },
    {
      "type": "WEB",
      "url": "https://github.com/parcel-bundler/parcel/pull/10138"
    },
    {
      "type": "WEB",
      "url": "https://github.com/parcel-bundler/parcel/commit/4bc56e3242a85491c7edf589966e9b44c6330c49"
    },
    {
      "type": "WEB",
      "url": "https://github.com/parcel-bundler/parcel/commit/9e2f6f1377123cff3b82f6dde4e20336efc846a1"
    },
    {
      "type": "WEB",
      "url": "https://gist.github.com/R4356th/41f468def606b2406e36f7193f5322b8"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/parcel-bundler/parcel"
    },
    {
      "type": "WEB",
      "url": "https://github.com/parcel-bundler/parcel/discussions/10089"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Parcel has an Origin Validation Error vulnerability"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.