CVE-2020-4038: Graphql playground html Cross-Site Scripting Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-4852-vrh7-28rf",
  "modified" : "2021-11-04T17:11:46Z",
  "published" : "2020-06-09T00:24:57Z",
  "aliases" : [ "CVE-2020-4038" ],
  "summary" : "Reflected XSS in GraphQL Playground",
  "details" : "### Impact\n\n**directly impacted:**\n\n- `graphql-playground-html@<1.6.22` - all unsanitized user input for `renderPlaygroundPage()`\n\n**all of our consuming packages** of `graphql-playground-html` are impacted:\n\n- `graphql-playground-middleware-express@<1.7.16` - unsanitized user input to `expressPlayground()`\n- `graphql-playground-middleware-koa@<1.6.15` - unsanitized user input to `koaPlayground()`\n- `graphql-playground-middleware-lambda@<1.7.17` - unsanitized user input to `lambdaPlayground()`\n- `graphql-playground-middleware-hapi@<1.6.13` - unsanitized user input to `hapiPlayground()`\n\nas well as ***any other packages*** that use these methods with unsanitized user input.\n\n**not impacted:**\n\n- `graphql-playground-electron` - uses `renderPlaygroundPage()` statically for a webpack build for electron bundle, no dynamic user input\n- `graphql-playground-react` - usage of the component directly in a react application does not expose reflected XSS vulnerabilities. only the demo in `public/` contains the vulnerability, because it uses an old version of the html pacakge.\n\n### Patches\n\nupgrading to the above mentioned versions will solve the issue.\n\nIf you're using `graphql-playground-html` directly, then:\n\n```\nyarn add graphql-playground-html@^1.6.22\n```\n\nor\n\n```\nnpm install --save graphql-playground-html@^1.6.22\n```\n\nThen, similar steps need to be taken for each middleware:\n\n- [Upgrade Express Middleware](https://www.npmjs.com/package/graphql-playground-middleware-express#security-upgrade-steps)\n- [Upgrade Koa Middleware](https://www.npmjs.com/package/graphql-playground-middleware-koa#security-upgrade-steps)\n- [Upgrade Lambda Middleware](https://www.npmjs.com/package/graphql-playground-middleware-lambda#security-upgrade-steps)\n- [Upgrade Hapi Middleware](https://www.npmjs.com/package/graphql-playground-middleware-hapi#security-upgrade-steps)\n\n### Workarounds\n\nEnsure you properly sanitize *all* user input for options you use for whatever function to initialize GraphQLPlayground:\n\nfor example, with `graphql-playground-html` and express:\n\n```js\nconst { sanitizeUrl } = require('@braintree/sanitize-url');\n\nconst qs = require('querystringify');\n\nconst { renderPlaygroundPage } = require('graphql-playground-html');\n\nmodule.exports = (req, res, next) => {\n\tconst { endpoint } = qs.parse(req.url)\n\tres.html(renderPlaygroundPage({endpoint: sanitizeUrl(endpoint) })).status(200)\n\tnext()\n}\n```\n\nor, with `graphql-playground-express`:\n\n```js\nconst { expressPlayground } = require('graphql-playground-middleware-express');\nconst { sanitizeUrl } = require('@braintree/sanitize-url');\n\nconst qs = require('querystringify');\n\nconst { renderPlaygroundPage } = require('graphql-playground-html');\n\nmodule.exports = (req, res, next) => {\n\tconst { endpoint } = qs.parse(req.url)\n\tres.html(expressPlayground({endpoint: sanitizeUrl(endpoint) })).status(200)\n\tnext()\n}\n```\n\n### References\n\n- [OWASP: How to Test for CSS Reflection Attacks](https://github.com/OWASP/wstg/blob/master/document/4-Web_Application_Security_Testing/07-Input_Validation_Testing/01-Testing_for_Reflected_Cross_Site_Scripting.md)\n- [Original Report from Cure53](https://user-images.githubusercontent.com/1368727/84191028-dfb7b980-aa65-11ea-8e18-4b8706f538e2.jpg) (jpg)\n\n\n### Credits\n\nMasato Kinugawa of Cure53\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [graphql-playground](https://github.com/prisma-labs/graphql-playground/issues/new/choose)\n* Email us at [rikki.schulte@gmail.com](mailto:rikki.schulte@gmail.com)\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "graphql-playground-html"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.6.22"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/graphql/graphql-playground/security/advisories/GHSA-4852-vrh7-28rf"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/prisma-labs/graphql-playground/security/advisories/GHSA-4852-vrh7-28rf"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-4038"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/prisma-labs/graphql-playground/commit/bf1883db538c97b076801a60677733816cb3cfb7"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/prisma-labs/graphql-playground#security-details"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-08T20:27:53Z",
    "nvd_published_at" : null
  }
}