{"cve":"CVE-2021-4245","nvd":{"published":"2022-12-15T20:15:09.783","modified":"2026-06-17T04:19:20.533","status":"Modified","description":"A vulnerability classified as problematic has been found in chbrown rfc6902. This affects an unknown part of the file pointer.ts. The manipulation leads to improperly controlled modification of object prototype attributes ('prototype pollution'). The exploit has been disclosed to the public and may be used. The name of the patch is c006ce9faa43d31edb34924f1df7b79c137096cf. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-215883.","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","CWE-74"],"references":["https://github.com/chbrown/rfc6902/commit/c006ce9faa43d31edb34924f1df7b79c137096cf","https://github.com/chbrown/rfc6902/pull/76","https://vuldb.com/?id.215883","https://github.com/chbrown/rfc6902/commit/c006ce9faa43d31edb34924f1df7b79c137096cf","https://github.com/chbrown/rfc6902/pull/76"],"products":["rfc6902_project:rfc6902"],"source":"nvd","synced_at":"2026-10-19T21:37:31.370122805+00:00"},"epss":{"cve":"CVE-2021-4245","score":0.01352,"percentile":0.71552,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-p495-jxh2-wrfg","url":"https://osv.dev/vulnerability/GHSA-p495-jxh2-wrfg","summary":"npm package rfc6902 vulnerable to Prototype Pollution","modified":"2023-11-08T04:07:06.332053Z","packages":[{"ecosystem":"npm","name":"rfc6902","purl":"pkg:npm/rfc6902","ranges":["<5.0.0"],"fixed":["5.0.0"]}]}],"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."]}