{"id":"CVE-2022-21803","aliases":["EUVD-2022-1659","GHSA-6xwr-q98w-rvg7"],"status":"published","title":"Prototype Pollution","description":"This affects the package nconf before 0.11.4. When using the memory engine, it is possible to store a nested JSON representation of the configuration. The .set() function, that is responsible for setting the configuration properties, is vulnerable to Prototype Pollution. By providing a crafted property, it is possible to modify the properties on the Object.prototype.","severity":{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0178,"percentile":0.78432,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1321"],"published":"2022-04-12T15:20:12Z","modified":"2026-10-28T02:30:41Z","fixes":[{"ecosystem":"npm","package":"nconf","fixed_in":["0.11.4"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"nconf","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.4"}]}]},{"source":"osv","ecosystem":"npm","package":"nconf","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.11.4"}]}]}],"products":[{"vendor":"nconf_project","product":"nconf"}],"references":[{"url":"https://snyk.io/vuln/SNYK-JS-NCONF-2395478","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","advisory","web"]},{"url":"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-2632450","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","advisory"]},{"url":"https://github.com/indexzero/nconf/pull/397","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Patch","Third Party Advisory","fix","web"]},{"url":"https://github.com/indexzero/nconf/releases/tag/v0.11.4","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-21803","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-6xwr-q98w-rvg7"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/21xxx/CVE-2022-21803.json","tags":["advisory"]},{"url":"https://github.com/indexzero/nconf","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2022-21803","title":"Prototype Pollution","description":"This affects the package nconf before 0.11.4. When using the memory engine, it is possible to store a nested JSON representation of the configuration. The .set() function, that is responsible for setting the configuration properties, is vulnerable to Prototype Pollution. By providing a crafted property, it is possible to modify the properties on the Object.prototype.","status":"published","published":"2022-04-12T15:20:12.37Z","modified":"2024-09-16T16:53:18.553Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:34:29.057251Z"}],"euvd":[{"id":"EUVD-2022-1659","description":"This affects the package nconf before 0.11.4. When using the memory engine, it is possible to store a nested JSON representation of the configuration. The .set() function, that is responsible for setting the configuration properties, is vulnerable to Prototype Pollution. By providing a crafted property, it is possible to modify the properties on the Object.prototype.","status":"published","published":"2022-04-12T15:20:12Z","modified":"2024-09-16T16:53:18Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P","level":"high"}],"updated_at":"2026-11-03T00:55:47.18954Z"}],"ghsa":[{"id":"GHSA-6xwr-q98w-rvg7","title":"Prototype Pollution in nconf","description":"nconf before 0.11.4. When using the memory engine, it is possible to store a nested JSON representation of the configuration. The .set() function, that is responsible for setting the configuration properties, is vulnerable to Prototype Pollution. By providing a crafted property, it is possible to modify the properties on the Object.prototype.","status":"published","published":"2022-04-13T00:00:30Z","modified":"2023-01-27T05:01:32Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:36:16.28305Z"}],"nvd":[{"id":"CVE-2022-21803","description":"This affects the package nconf before 0.11.4. When using the memory engine, it is possible to store a nested JSON representation of the configuration. The .set() function, that is responsible for setting the configuration properties, is vulnerable to Prototype Pollution. By providing a crafted property, it is possible to modify the properties on the Object.prototype.","status":"published","published":"2022-04-12T16:15:08.48Z","modified":"2026-06-17T04:27:00.927Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:07:15.414503Z"}],"osv":[{"id":"CVE-2022-21803","title":"Prototype Pollution","description":"This affects the package nconf before 0.11.4. When using the memory engine, it is possible to store a nested JSON representation of the configuration. The .set() function, that is responsible for setting the configuration properties, is vulnerable to Prototype Pollution. By providing a crafted property, it is possible to modify the properties on the Object.prototype.","status":"published","published":"2022-04-12T15:20:12.37Z","modified":"2026-10-28T02:30:41.580298412Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P","level":"high"}],"updated_at":"2026-11-02T15:44:23.655778Z"},{"id":"GHSA-6xwr-q98w-rvg7","title":"Prototype Pollution in nconf","description":"nconf before 0.11.4. When using the memory engine, it is possible to store a nested JSON representation of the configuration. The .set() function, that is responsible for setting the configuration properties, is vulnerable to Prototype Pollution. By providing a crafted property, it is possible to modify the properties on the Object.prototype.","status":"published","published":"2022-04-13T00:00:30Z","modified":"2024-05-19T02:24:17.311015Z","cvss":[{"version":"3.1","score":7.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T15:46:40.308826Z"}]}}