{"id":"CVE-2021-46461","aliases":["ALPINE-CVE-2021-46461","BELL-CVE-2021-46461","EUVD-2021-33137","GHSA-8g5q-f4mq-w57g"],"status":"published","title":"njs through 0.7.0, used in NGINX, was discovered to contain an out-of-bounds array access via...","description":"njs through 0.7.0, used in NGINX, was discovered to contain an out-of-bounds array access via njs_vmcode_typeof in /src/njs_vmcode.c.","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":"2026-11-11","score":0.03147,"percentile":0.88096,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119"],"published":"2022-02-14T21:47:17Z","modified":"2026-11-03T06:32:42Z","fixes":[{"ecosystem":"Alpine:v3.16","package":"nginx","fixed_in":["1.20.2-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"nginx","fixed_in":["1.20.2-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"nginx","fixed_in":["1.20.2-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"nginx","fixed_in":["1.20.2-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"nginx","fixed_in":["1.20.2-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"nginx","fixed_in":["1.20.2-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"nginx","fixed_in":["1.20.2-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"nginx","fixed_in":["1.20.2-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"nginx","fixed_in":["1.20.2-r2"],"sources":["osv"]},{"ecosystem":"Alpine:v3.15","package":"njs","fixed_in":["0.7.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.16","package":"njs","fixed_in":["0.7.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"njs","fixed_in":["0.7.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"njs","fixed_in":["0.7.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"njs","fixed_in":["0.7.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"njs","fixed_in":["0.7.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"njs","fixed_in":["0.7.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"njs","fixed_in":["0.7.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"njs","fixed_in":["0.7.1-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"njs","fixed_in":["0.7.1-r0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Alpine:v3.16","package":"nginx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.2-r2"}]}]},{"source":"osv","ecosystem":"Alpine:v3.17","package":"nginx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.2-r2"}]}]},{"source":"osv","ecosystem":"Alpine:v3.18","package":"nginx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.2-r2"}]}]},{"source":"osv","ecosystem":"Alpine:v3.19","package":"nginx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.2-r2"}]}]},{"source":"osv","ecosystem":"Alpine:v3.20","package":"nginx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.2-r2"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"nginx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.2-r2"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"nginx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.2-r2"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"nginx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.2-r2"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"nginx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.20.2-r2"}]}]},{"source":"osv","ecosystem":"Alpine:v3.15","package":"njs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.16","package":"njs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.17","package":"njs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.18","package":"njs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.19","package":"njs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.20","package":"njs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.21","package":"njs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.22","package":"njs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.23","package":"njs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.1-r0"}]}]},{"source":"osv","ecosystem":"Alpine:v3.24","package":"njs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.7.1-r0"}]}]}],"products":[{"vendor":"nginx","product":"njs"}],"references":[{"url":"https://github.com/nginx/njs/issues/450","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence"]},{"url":"https://github.com/nginx/njs/commit/d457c9545e7e71ebb5c0479eb16b9d33175855e2","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory","fix"]},{"url":"https://security.netapp.com/advisory/ntap-20220303-0007/","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-46461"},{"url":"https://github.com/advisories/GHSA-8g5q-f4mq-w57g"},{"url":"https://security.alpinelinux.org/vuln/CVE-2021-46461","tags":["advisory"]},{"url":"https://docs.bell-sw.com/security/cves/CVE-2021-46461","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2021-46461","description":"njs through 0.7.0, used in NGINX, was discovered to contain an out-of-bounds array access via njs_vmcode_typeof in /src/njs_vmcode.c.","status":"published","published":"2022-02-14T21:47:17Z","modified":"2024-08-04T05:10:34.924Z","updated_at":"2026-11-02T14:33:02.930115Z"}],"euvd":[{"id":"EUVD-2021-33137","description":"njs through 0.7.0, used in NGINX, was discovered to contain an out-of-bounds array access via njs_vmcode_typeof in /src/njs_vmcode.c.","status":"published","published":"2022-02-14T21:47:17Z","modified":"2024-08-04T05:10:34Z","updated_at":"2026-11-03T03:08:23.591313Z"}],"ghsa":[{"id":"GHSA-8g5q-f4mq-w57g","title":"njs through 0.7.0, used in NGINX, was discovered to contain an out-of-bounds array access via...","description":"njs through 0.7.0, used in NGINX, was discovered to contain an out-of-bounds array access via njs_vmcode_typeof in /src/njs_vmcode.c.","status":"published","published":"2022-02-15T00:02:44Z","modified":"2023-02-03T05:05:54Z","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-119"],"updated_at":"2026-11-02T14:53:48.81294Z"}],"nvd":[{"id":"CVE-2021-46461","description":"njs through 0.7.0, used in NGINX, was discovered to contain an out-of-bounds array access via njs_vmcode_typeof in /src/njs_vmcode.c.","status":"published","published":"2022-02-14T22:15:07.717Z","modified":"2026-06-17T04:14:55.203Z","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-119"],"updated_at":"2026-11-02T14:07:04.6896Z"}],"osv":[{"id":"ALPINE-CVE-2021-46461","description":"njs through 0.7.0, used in NGINX, was discovered to contain an out-of-bounds array access via njs_vmcode_typeof in /src/njs_vmcode.c.","status":"published","published":"2022-02-14T22:15:07.717Z","modified":"2026-11-03T06:32:42.148376867Z","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":"2026-11-03T07:17:02.90744Z"},{"id":"BELL-CVE-2021-46461","title":"CVE-2021-46461 does not affect BellSoft software","status":"withdrawn","published":"2023-08-31T12:15:44.911642Z","modified":"2026-01-26T10:04:56.593932Z","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":"2026-11-02T15:28:16.5265Z"},{"id":"CVE-2021-46461","description":"njs through 0.7.0, used in NGINX, was discovered to contain an out-of-bounds array access via njs_vmcode_typeof in /src/njs_vmcode.c.","status":"published","published":"2022-02-14T22:15:07.717Z","modified":"2026-10-20T14:31:39.355031244Z","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":"2026-11-02T15:44:22.18434Z"}]}}
