{"cve":"CVE-2020-36632","nvd":{"published":"2022-12-25T20:15:25.287","modified":"2026-06-17T03:15:51.030","status":"Modified","description":"A vulnerability, which was classified as critical, was found in hughsk flat up to 5.0.0. This affects the function unflatten of the file index.js. The manipulation leads to improperly controlled modification of object prototype attributes ('prototype pollution'). It is possible to initiate the attack remotely. Upgrading to version 5.0.1 is able to address this issue. The name of the patch is 20ef0ef55dfa028caddaedbcb33efbdb04d18e13. It is recommended to upgrade the affected component. The identifier VDB-216777 was assigned to this vulnerability.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-1321"],"references":["https://github.com/hughsk/flat/commit/20ef0ef55dfa028caddaedbcb33efbdb04d18e13","https://github.com/hughsk/flat/issues/105","https://github.com/hughsk/flat/pull/106","https://github.com/hughsk/flat/releases/tag/5.0.1","https://vuldb.com/?ctiid.216777"],"products":["flat_project:flat"],"source":"nvd","synced_at":"2026-10-19T21:37:31.370122805+00:00"},"epss":{"cve":"CVE-2020-36632","score":0.01211,"percentile":0.68488,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-2j2x-2gpw-g8fm","url":"https://osv.dev/vulnerability/GHSA-2j2x-2gpw-g8fm","summary":"flat vulnerable to Prototype Pollution","modified":"2026-02-03T03:16:54.193415Z","packages":[{"ecosystem":"npm","name":"flat","purl":"pkg:npm/flat","ranges":["<1.6.2"],"fixed":["1.6.2"]},{"ecosystem":"npm","name":"flat","purl":"pkg:npm/flat","ranges":[">=2.0.0 <2.0.2"],"fixed":["2.0.2"]},{"ecosystem":"npm","name":"flat","purl":"pkg:npm/flat","ranges":[">=3.0.0 <3.0.1"],"fixed":["3.0.1"]},{"ecosystem":"npm","name":"flat","purl":"pkg:npm/flat","ranges":[">=4.0.0 <4.0.2"],"fixed":["4.0.2"]},{"ecosystem":"npm","name":"flat","purl":"pkg:npm/flat","ranges":[">=5.0.0 <5.0.1"],"fixed":["5.0.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}