{"id":"CVE-2021-25927","aliases":["EUVD-2021-1247","GHSA-33rv-m2gp-mm2r"],"status":"published","title":"Prototype pollution in safe-flat","description":"Prototype pollution vulnerability in 'safe-flat' versions 2.0.0 through 2.0.1 allows an attacker to cause a denial of service and may lead to remote code execution.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.03337,"percentile":0.88746,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1321"],"published":"2021-04-26T10:54:42Z","modified":"2026-10-20T10:54:33Z","fixes":[{"ecosystem":"npm","package":"safe-flat","fixed_in":["2.0.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"safe-flat","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.0.2"}]}]},{"source":"osv","ecosystem":"npm","package":"safe-flat","ranges":[{"type":"SEMVER","events":[{"introduced":"2.0.0"},{"fixed":"2.0.2"}]}]}],"products":[{"vendor":"safe-flat_project","product":"safe-flat"}],"references":[{"url":"https://www.whitesourcesoftware.com/vulnerability-database/CVE-2021-25927","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","web"]},{"url":"https://github.com/jessie-codes/safe-flat/commit/4b9b7db976bba8c968354f4315f5f9c219b7cbf3","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-25927","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-33rv-m2gp-mm2r"}],"sources":{"cve":[{"id":"CVE-2021-25927","description":"Prototype pollution vulnerability in 'safe-flat' versions 2.0.0 through 2.0.1 allows an attacker to cause a denial of service and may lead to remote code execution.","status":"published","published":"2021-04-26T10:54:42Z","modified":"2025-04-30T20:23:08.316Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:32:59.430294Z"}],"euvd":[{"id":"EUVD-2021-1247","description":"Prototype pollution vulnerability in 'safe-flat' versions 2.0.0 through 2.0.1 allows an attacker to cause a denial of service and may lead to remote code execution.","status":"published","published":"2021-04-26T10:54:42Z","modified":"2025-04-30T20:23:08Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T20:51:58.065214Z"}],"ghsa":[{"id":"GHSA-33rv-m2gp-mm2r","title":"Prototype pollution in safe-flat","description":"Prototype pollution vulnerability in 'safe-flat' versions 2.0.0 through 2.0.1 allows an attacker to cause a denial of service and may lead to remote code execution.","status":"published","published":"2021-06-21T17:18:29Z","modified":"2023-02-01T05:05:46Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:36:35.781528Z"}],"nvd":[{"id":"CVE-2021-25927","description":"Prototype pollution vulnerability in 'safe-flat' versions 2.0.0 through 2.0.1 allows an attacker to cause a denial of service and may lead to remote code execution.","status":"published","published":"2021-04-26T11:15:08.217Z","modified":"2026-06-17T03:42:35.96Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:06:52.81233Z"}],"osv":[{"id":"CVE-2021-25927","description":"Prototype pollution vulnerability in 'safe-flat' versions 2.0.0 through 2.0.1 allows an attacker to cause a denial of service and may lead to remote code execution.","status":"published","published":"2021-04-26T11:15:08.217Z","modified":"2026-10-20T10:54:33.954024552Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:18.778776Z"},{"id":"GHSA-33rv-m2gp-mm2r","title":"Prototype pollution in safe-flat","description":"Prototype pollution vulnerability in 'safe-flat' versions 2.0.0 through 2.0.1 allows an attacker to cause a denial of service and may lead to remote code execution.","status":"published","published":"2021-06-21T17:18:29Z","modified":"2023-11-08T04:05:17.468833Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T15:46:35.050232Z"}]}}