{"id":"CVE-2020-23302","aliases":["EUVD-2020-16050","GHSA-x87v-6qg8-4jhm","UBUNTU-CVE-2020-23302"],"status":"published","title":"There is a heap-use-after-free at ecma-helpers-string.c:772 in ecma_ref_ecma_string in...","description":"There is a heap-use-after-free at ecma-helpers-string.c:772 in ecma_ref_ecma_string in JerryScript 2.2.0","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":0.01269,"percentile":0.7002,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2021-06-10T22:12:36Z","modified":"2026-10-20T10:52:49Z","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/3748","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-23302"},{"url":"https://github.com/advisories/GHSA-x87v-6qg8-4jhm"},{"url":"https://ubuntu.com/security/CVE-2020-23302","tags":["report"]},{"url":"https://github.com/jerryscript-project/jerryscript/pull/3765","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-23302","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-23302","description":"There is a heap-use-after-free at ecma-helpers-string.c:772 in ecma_ref_ecma_string in JerryScript 2.2.0","status":"published","published":"2021-06-10T22:12:36Z","modified":"2024-08-04T14:58:14.647Z","updated_at":"2026-11-02T14:35:49.209579Z"}],"euvd":[{"id":"EUVD-2020-16050","description":"There is a heap-use-after-free at ecma-helpers-string.c:772 in ecma_ref_ecma_string in JerryScript 2.2.0","status":"published","published":"2021-06-10T22:12:36Z","modified":"2024-08-04T14:58:14Z","updated_at":"2026-11-03T03:07:21.661388Z"}],"ghsa":[{"id":"GHSA-x87v-6qg8-4jhm","title":"There is a heap-use-after-free at ecma-helpers-string.c:772 in ecma_ref_ecma_string in...","description":"There is a heap-use-after-free at ecma-helpers-string.c:772 in ecma_ref_ecma_string in JerryScript 2.2.0","status":"published","published":"2022-05-24T19:05:14Z","modified":"2023-01-29T05:06:32Z","cwes":["CWE-416"],"updated_at":"2026-11-02T14:46:02.943866Z"}],"nvd":[{"id":"CVE-2020-23302","description":"There is a heap-use-after-free at ecma-helpers-string.c:772 in ecma_ref_ecma_string in JerryScript 2.2.0","status":"published","published":"2021-06-10T23:15:07.74Z","modified":"2026-06-17T03:04:39.087Z","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":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:06:43.288951Z"}],"osv":[{"id":"CVE-2020-23302","description":"There is a heap-use-after-free at ecma-helpers-string.c:772 in ecma_ref_ecma_string in JerryScript 2.2.0","status":"published","published":"2021-06-10T23:15:07.74Z","modified":"2026-10-20T10:52:49.071384347Z","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":"2026-11-02T15:44:15.534837Z"},{"id":"UBUNTU-CVE-2020-23302","description":"There is a heap-use-after-free at ecma-helpers-string.c:772 in ecma_ref_ecma_string in JerryScript 2.2.0","status":"published","published":"2021-06-10T23:15:00Z","modified":"2026-04-22T12:04:11.282966Z","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":"2026-11-02T15:54:23.905183Z"}]}}