{"id":"CVE-2021-46510","aliases":["EUVD-2021-33186","GHSA-pr4h-pc76-99rf"],"status":"published","title":"There is an Assertion `s \u003c mjs-\u003eowned_strings.buf + mjs-\u003eowned_strings.len' failed at src/mjs_gc...","description":"There is an Assertion `s \u003c mjs-\u003eowned_strings.buf + mjs-\u003eowned_strings.len' failed at src/mjs_gc.c in Cesanta MJS v2.20.0.","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":"2026-11-10","score":0.00614,"percentile":0.49733,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-617"],"published":"2022-01-27T20:22:01Z","modified":"2026-10-20T10:55:09Z","products":[{"vendor":"cesanta","product":"mjs"}],"references":[{"url":"https://github.com/cesanta/mjs/issues/185","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-46510"},{"url":"https://github.com/advisories/GHSA-pr4h-pc76-99rf"}],"sources":{"cve":[{"id":"CVE-2021-46510","description":"There is an Assertion `s \u003c mjs-\u003eowned_strings.buf + mjs-\u003eowned_strings.len' failed at src/mjs_gc.c in Cesanta MJS v2.20.0.","status":"published","published":"2022-01-27T20:22:01Z","modified":"2024-08-04T05:10:34.95Z","updated_at":"2026-11-02T14:33:02.930115Z"}],"euvd":[{"id":"EUVD-2021-33186","description":"There is an Assertion `s \u003c mjs-\u003eowned_strings.buf + mjs-\u003eowned_strings.len' failed at src/mjs_gc.c in Cesanta MJS v2.20.0.","status":"published","published":"2022-01-27T20:22:01Z","modified":"2024-08-04T05:10:34Z","updated_at":"2026-11-03T03:08:23.591313Z"}],"ghsa":[{"id":"GHSA-pr4h-pc76-99rf","title":"There is an Assertion `s \u003c mjs-\u003eowned_strings.buf + mjs-\u003eowned_strings.len' failed at src/mjs_gc...","description":"There is an Assertion `s \u003c mjs-\u003eowned_strings.buf + mjs-\u003eowned_strings.len' failed at src/mjs_gc.c in Cesanta MJS v2.20.0.","status":"published","published":"2022-01-28T00:01:25Z","modified":"2023-02-03T05:05:24Z","cwes":["CWE-617"],"updated_at":"2026-11-02T14:53:43.901857Z"}],"nvd":[{"id":"CVE-2021-46510","description":"There is an Assertion `s \u003c mjs-\u003eowned_strings.buf + mjs-\u003eowned_strings.len' failed at src/mjs_gc.c in Cesanta MJS v2.20.0.","status":"published","published":"2022-01-27T21:15:09.507Z","modified":"2026-06-17T04:14:59.323Z","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":"2026-11-02T14:07:04.178977Z"}],"osv":[{"id":"CVE-2021-46510","description":"There is an Assertion `s \u003c mjs-\u003eowned_strings.buf + mjs-\u003eowned_strings.len' failed at src/mjs_gc.c in Cesanta MJS v2.20.0.","status":"published","published":"2022-01-27T21:15:09.507Z","modified":"2026-10-20T10:55:09.964129915Z","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"}]}}