{"id":"GHSA-jjf5-wx3j-3fv7","summary":"Prototype Pollution in convict","details":"This affects the package convict before 6.2.3. This is a bypass of [CVE-2022-22143](https://security.snyk.io/vuln/SNYK-JS-CONVICT-2340604). The [fix](https://github.com/mozilla/node-convict/commit/3b86be087d8f14681a9c889d45da7fe3ad9cd880) introduced, relies on the startsWith method and does not prevent the vulnerability: before splitting the path, it checks if it starts with __proto__ or this.constructor.prototype. To bypass this check it's possible to prepend the dangerous paths with any string value followed by a dot, like for example foo.__proto__ or foo.this.constructor.prototype.","aliases":["CVE-2022-21190","SNYK-JS-CONVICT-2774757"],"modified":"2026-07-08T06:50:01.831796161Z","published":"2022-05-14T00:01:09Z","database_specific":{"cwe_ids":["CWE-1321"],"severity":"CRITICAL","github_reviewed":true,"github_reviewed_at":"2022-05-25T22:54:49Z","nvd_published_at":"2022-05-13T20:15:00Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-21190"},{"type":"WEB","url":"https://github.com/mozilla/node-convict/commit/1ea0ab19c5208f66509e1c43b0d0f21c1fd29b75"},{"type":"WEB","url":"https://gist.github.com/dellalibera/cebce20e51410acebff1f46afdc89808"},{"type":"PACKAGE","url":"https://github.com/mozilla/node-convict"},{"type":"WEB","url":"https://github.com/mozilla/node-convict/blob/3b86be087d8f14681a9c889d45da7fe3ad9cd880/packages/convict/src/main.js%23L571"},{"type":"WEB","url":"https://github.com/mozilla/node-convict/blob/master/CHANGELOG.md%23623---2022-05-07"},{"type":"WEB","url":"https://snyk.io/vuln/SNYK-JS-CONVICT-2774757"}],"affected":[{"package":{"name":"convict","ecosystem":"npm","purl":"pkg:npm/convict"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"6.2.3"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/05/GHSA-jjf5-wx3j-3fv7/GHSA-jjf5-wx3j-3fv7.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}