{"id":"CVE-2019-12206","aliases":["EUVD-2019-3851","GHSA-mq5m-xcvm-7fmj"],"status":"published","title":"njs through 0.3.1, used in NGINX, has a heap-based buffer overflow in nxt_utf8_encode in nxt_utf8.c.","description":"njs through 0.3.1, used in NGINX, has a heap-based buffer overflow in nxt_utf8_encode in nxt_utf8.c.","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":0.01986,"percentile":0.8075,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2019-05-20T13:28:45Z","modified":"2026-10-20T10:50:42Z","products":[{"vendor":"f5","product":"njs"}],"references":[{"url":"https://github.com/nginx/njs/issues/162","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-12206"},{"url":"https://github.com/advisories/GHSA-mq5m-xcvm-7fmj"}],"sources":{"cve":[{"id":"CVE-2019-12206","description":"njs through 0.3.1, used in NGINX, has a heap-based buffer overflow in nxt_utf8_encode in nxt_utf8.c.","status":"published","published":"2019-05-20T13:28:45Z","modified":"2024-08-04T23:17:38.93Z","updated_at":"2026-11-02T14:20:24.025419Z"}],"euvd":[{"id":"EUVD-2019-3851","description":"njs through 0.3.1, used in NGINX, has a heap-based buffer overflow in nxt_utf8_encode in nxt_utf8.c.","status":"published","published":"2019-05-20T13:28:45Z","modified":"2024-08-04T23:17:38Z","updated_at":"2026-11-03T02:40:46.843701Z"}],"ghsa":[{"id":"GHSA-mq5m-xcvm-7fmj","title":"njs through 0.3.1, used in NGINX, has a heap-based buffer overflow in nxt_utf8_encode in nxt_utf8.c.","description":"njs through 0.3.1, used in NGINX, has a heap-based buffer overflow in nxt_utf8_encode in nxt_utf8.c.","status":"published","published":"2022-05-24T21:59:52Z","modified":"2023-01-30T05:04:09Z","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-787"],"updated_at":"2026-11-02T14:46:58.911326Z"}],"nvd":[{"id":"CVE-2019-12206","description":"njs through 0.3.1, used in NGINX, has a heap-based buffer overflow in nxt_utf8_encode in nxt_utf8.c.","status":"published","published":"2019-05-20T14:29:00.697Z","modified":"2026-06-17T02:14:14.403Z","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-787"],"updated_at":"2026-11-02T14:05:13.880207Z"}],"osv":[{"id":"CVE-2019-12206","description":"njs through 0.3.1, used in NGINX, has a heap-based buffer overflow in nxt_utf8_encode in nxt_utf8.c.","status":"published","published":"2019-05-20T14:29:00.697Z","modified":"2026-10-20T10:50:42.206222372Z","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"}],"updated_at":"2026-11-02T15:44:10.718934Z"}]}}