{"id":"CVE-2019-12966","aliases":["EUVD-2019-4541","GHSA-jpr5-9g6v-vc48"],"status":"published","title":"FeHelper through 2019-06-19 allows arbitrary code execution during a JSON format operation, as...","description":"FeHelper through 2019-06-19 allows arbitrary code execution during a JSON format operation, as demonstrated by the {\"a\":(function(){confirm(1)})()} input.","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02401,"percentile":0.84151,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-74"],"published":"2019-06-26T11:31:17Z","modified":"2026-06-17T02:15:48Z","products":[{"vendor":"fehelper_project","product":"fehelper"}],"references":[{"url":"https://github.com/zxlie/FeHelper/issues/63","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-12966"},{"url":"https://github.com/advisories/GHSA-jpr5-9g6v-vc48"}],"sources":{"cve":[{"id":"CVE-2019-12966","description":"FeHelper through 2019-06-19 allows arbitrary code execution during a JSON format operation, as demonstrated by the {\"a\":(function(){confirm(1)})()} input.","status":"published","published":"2019-06-26T11:31:17Z","modified":"2024-08-04T23:41:08.898Z","updated_at":"2026-11-02T14:20:23.697579Z"}],"euvd":[{"id":"EUVD-2019-4541","description":"FeHelper through 2019-06-19 allows arbitrary code execution during a JSON format operation, as demonstrated by the {\"a\":(function(){confirm(1)})()} input.","status":"published","published":"2019-06-26T11:31:17Z","modified":"2024-08-04T23:41:08Z","updated_at":"2026-11-03T02:40:44.337354Z"}],"ghsa":[{"id":"GHSA-jpr5-9g6v-vc48","title":"FeHelper through 2019-06-19 allows arbitrary code execution during a JSON format operation, as...","description":"FeHelper through 2019-06-19 allows arbitrary code execution during a JSON format operation, as demonstrated by the {\"a\":(function(){confirm(1)})()} input.","status":"published","published":"2022-05-24T16:48:40Z","modified":"2024-04-04T01:03:02Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:55:55.00861Z"}],"nvd":[{"id":"CVE-2019-12966","description":"FeHelper through 2019-06-19 allows arbitrary code execution during a JSON format operation, as demonstrated by the {\"a\":(function(){confirm(1)})()} input.","status":"published","published":"2019-06-26T12:15:08.727Z","modified":"2026-06-17T02:15:48.96Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"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-74"],"updated_at":"2026-11-02T14:05:17.695191Z"}]}}