{"cve":"CVE-2021-3645","nvd":{"published":"2021-09-10T11:15:09.933","modified":"2026-06-17T04:05:29.970","status":"Modified","description":"merge is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')","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/viking04/merge/commit/baba40332080b38b33840d2614df6d4142dedaf6","https://huntr.dev/bounties/ef387a9e-ca3c-4c21-80e3-d34a6a896262","https://github.com/viking04/merge/commit/baba40332080b38b33840d2614df6d4142dedaf6","https://huntr.dev/bounties/ef387a9e-ca3c-4c21-80e3-d34a6a896262"],"products":["merge_project:merge"],"source":"nvd","synced_at":"2026-10-19T21:23:41.316049955+00:00"},"epss":{"cve":"CVE-2021-3645","score":0.01429,"percentile":0.73008,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-cqqh-49mx-fq63","url":"https://osv.dev/vulnerability/GHSA-cqqh-49mx-fq63","summary":"merge vulnerable to Prototype Pollution","modified":"2023-11-08T04:06:14.516715Z","packages":[{"ecosystem":"npm","name":"@viking04/merge","purl":"pkg:npm/%40viking04/merge","ranges":["<1.0.2"],"fixed":["1.0.2"]}]}],"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."]}