{"id":"CVE-2021-46342","aliases":["EUVD-2021-33030","GHSA-r4xc-g4x2-59j9","UBUNTU-CVE-2021-46342"],"status":"published","title":"There is an Assertion 'ecma_is_lexical_environment (obj_p) || !ecma_op_object_is_fast_array ...","description":"There is an Assertion 'ecma_is_lexical_environment (obj_p) || !ecma_op_object_is_fast_array (obj_p)' failed at /jerry-core/ecma/base/ecma-helpers.c in JerryScript 3.0.0.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00621,"percentile":0.50067,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-617"],"published":"2022-01-20T21:14:36Z","modified":"2026-10-20T10:55:09Z","affected":[{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"iotjs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0-1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"iotjs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.0+715-1ubuntu2"]}],"products":[{"vendor":"jerryscript","product":"jerryscript"}],"references":[{"url":"https://github.com/jerryscript-project/jerryscript/issues/4934","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-46342"},{"url":"https://github.com/advisories/GHSA-r4xc-g4x2-59j9"},{"url":"https://ubuntu.com/security/CVE-2021-46342","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-46342","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-46342","description":"There is an Assertion 'ecma_is_lexical_environment (obj_p) || !ecma_op_object_is_fast_array (obj_p)' failed at /jerry-core/ecma/base/ecma-helpers.c in JerryScript 3.0.0.","status":"published","published":"2022-01-20T21:14:36Z","modified":"2024-08-04T05:02:11.605Z","updated_at":"2026-11-02T14:33:02.930115Z"}],"euvd":[{"id":"EUVD-2021-33030","description":"There is an Assertion 'ecma_is_lexical_environment (obj_p) || !ecma_op_object_is_fast_array (obj_p)' failed at /jerry-core/ecma/base/ecma-helpers.c in JerryScript 3.0.0.","status":"published","published":"2022-01-20T21:14:36Z","modified":"2024-08-04T05:02:11Z","updated_at":"2026-11-03T03:08:24.142295Z"}],"ghsa":[{"id":"GHSA-r4xc-g4x2-59j9","title":"There is an Assertion 'ecma_is_lexical_environment (obj_p) || !ecma_op_object_is_fast_array ...","description":"There is an Assertion 'ecma_is_lexical_environment (obj_p) || !ecma_op_object_is_fast_array (obj_p)' failed at /jerry-core/ecma/base/ecma-helpers.c in JerryScript 3.0.0.","status":"published","published":"2022-01-21T00:00:25Z","modified":"2023-02-03T05:05:11Z","cwes":["CWE-617"],"updated_at":"2026-11-02T14:53:41.929217Z"}],"nvd":[{"id":"CVE-2021-46342","description":"There is an Assertion 'ecma_is_lexical_environment (obj_p) || !ecma_op_object_is_fast_array (obj_p)' failed at /jerry-core/ecma/base/ecma-helpers.c in JerryScript 3.0.0.","status":"published","published":"2022-01-20T22:15:08.827Z","modified":"2026-06-17T04:14:46.41Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-617"],"updated_at":"2026-11-02T14:07:03.821385Z"}],"osv":[{"id":"CVE-2021-46342","description":"There is an Assertion 'ecma_is_lexical_environment (obj_p) || !ecma_op_object_is_fast_array (obj_p)' failed at /jerry-core/ecma/base/ecma-helpers.c in JerryScript 3.0.0.","status":"published","published":"2022-01-20T22:15:08.827Z","modified":"2026-10-20T10:55:09.648838001Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:44:22.18434Z"},{"id":"UBUNTU-CVE-2021-46342","description":"There is an Assertion 'ecma_is_lexical_environment (obj_p) || !ecma_op_object_is_fast_array (obj_p)' failed at /jerry-core/ecma/base/ecma-helpers.c in JerryScript 3.0.0.","status":"published","published":"2022-01-20T22:15:00Z","modified":"2026-04-22T13:05:24.450085Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-02T15:54:30.277322Z"}]}}