{"id":"CVE-2023-50044","aliases":["EUVD-2023-54874","GHSA-5x2j-8rm7-fm3j"],"status":"published","title":"Buffer Overflow vulnerability in Cesanta MJS version 2.22.0, allows attackers to execute...","description":"Cesanta MJS 2.20.0 has a getprop_builtin_foreign out-of-bounds read if a Built-in API name occurs in a substring of an input string.","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":0.0086,"percentile":0.58817,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2023-12-20T00:00:00Z","modified":"2026-06-17T06:39:07Z","products":[{"vendor":"cesanta","product":"mjs"}],"references":[{"url":"https://github.com/cesanta/mjs/issues/254","tags":["x_transferred","Exploit","Issue Tracking"]},{"url":"https://github.com/cesanta/mjs/pull/255","tags":["x_transferred","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-50044"},{"url":"https://github.com/advisories/GHSA-5x2j-8rm7-fm3j"}],"sources":{"cve":[{"id":"CVE-2023-50044","description":"Cesanta MJS 2.20.0 has a getprop_builtin_foreign out-of-bounds read if a Built-in API name occurs in a substring of an input string.","status":"published","published":"2023-12-20T00:00:00Z","modified":"2024-08-02T22:09:49.625Z","updated_at":"2026-11-02T14:35:34.55015Z"}],"euvd":[{"id":"EUVD-2023-54874","description":"Cesanta MJS 2.20.0 has a getprop_builtin_foreign out-of-bounds read if a Built-in API name occurs in a substring of an input string.","status":"published","published":"2023-12-20T00:00:00Z","modified":"2024-08-02T22:09:49Z","updated_at":"2026-11-03T03:49:55.731961Z"}],"ghsa":[{"id":"GHSA-5x2j-8rm7-fm3j","title":"Buffer Overflow vulnerability in Cesanta MJS version 2.22.0, allows attackers to execute...","description":"Buffer Overflow vulnerability in Cesanta MJS version 2.22.0, allows attackers to execute arbitrary code, cause a denial of service (Dos), and obtain sensitive information via segmentation fault can occur in getprop_builtin_foreign when input string includes a name of Built-in APIs.","status":"published","published":"2023-12-20T09:30:26Z","modified":"2023-12-29T00:30:37Z","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-120"],"updated_at":"2026-11-02T14:55:17.557989Z"}],"nvd":[{"id":"CVE-2023-50044","description":"Cesanta MJS 2.20.0 has a getprop_builtin_foreign out-of-bounds read if a Built-in API name occurs in a substring of an input string.","status":"published","published":"2023-12-20T09:15:07.297Z","modified":"2026-06-17T06:39:07.4Z","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"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:08:56.329586Z"}]}}