{"id":"CVE-2019-16366","aliases":["EUVD-2019-7127","GHSA-h8p9-2q3j-5c34"],"status":"published","title":"In XS 9.0.0 in Moddable SDK OS180329, there is a heap-based buffer overflow in fxBeginHost in...","description":"In XS 9.0.0 in Moddable SDK OS180329, there is a heap-based buffer overflow in fxBeginHost in xsAPI.c when called from fxRunDefine in xsRun.c, as demonstrated by crafted JavaScript code to xst.","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":"2026-11-09","score":0.01353,"percentile":0.71779,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120","CWE-787"],"published":"2019-09-16T16:09:27Z","modified":"2026-10-24T10:50:05Z","products":[{"vendor":"moddable","product":"moddable"},{"vendor":"moddable","product":"xs"}],"references":[{"url":"https://github.com/Moddable-OpenSource/moddable/issues/235","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-16366"},{"url":"https://github.com/advisories/GHSA-h8p9-2q3j-5c34"}],"sources":{"cve":[{"id":"CVE-2019-16366","description":"In XS 9.0.0 in Moddable SDK OS180329, there is a heap-based buffer overflow in fxBeginHost in xsAPI.c when called from fxRunDefine in xsRun.c, as demonstrated by crafted JavaScript code to xst.","status":"published","published":"2019-09-16T16:09:27Z","modified":"2024-08-05T01:10:41.679Z","updated_at":"2026-11-02T14:32:23.189113Z"}],"euvd":[{"id":"EUVD-2019-7127","description":"In XS 9.0.0 in Moddable SDK OS180329, there is a heap-based buffer overflow in fxBeginHost in xsAPI.c when called from fxRunDefine in xsRun.c, as demonstrated by crafted JavaScript code to xst.","status":"published","published":"2019-09-16T16:09:27Z","modified":"2024-08-05T01:10:41Z","updated_at":"2026-11-03T02:40:33.179924Z"}],"ghsa":[{"id":"GHSA-h8p9-2q3j-5c34","title":"In XS 9.0.0 in Moddable SDK OS180329, there is a heap-based buffer overflow in fxBeginHost in...","description":"In XS 9.0.0 in Moddable SDK OS180329, there is a heap-based buffer overflow in fxBeginHost in xsAPI.c when called from fxRunDefine in xsRun.c, as demonstrated by crafted JavaScript code to xst.","status":"published","published":"2022-05-24T16:56:18Z","modified":"2023-01-28T05:07:13Z","cwes":["CWE-120"],"updated_at":"2026-11-02T14:44:30.20469Z"}],"nvd":[{"id":"CVE-2019-16366","description":"In XS 9.0.0 in Moddable SDK OS180329, there is a heap-based buffer overflow in fxBeginHost in xsAPI.c when called from fxRunDefine in xsRun.c, as demonstrated by crafted JavaScript code to xst.","status":"published","published":"2019-09-16T17:15:14.293Z","modified":"2026-06-17T02:22:11.147Z","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-787"],"updated_at":"2026-11-02T14:05:28.126831Z"}],"osv":[{"id":"CVE-2019-16366","description":"In XS 9.0.0 in Moddable SDK OS180329, there is a heap-based buffer overflow in fxBeginHost in xsAPI.c when called from fxRunDefine in xsRun.c, as demonstrated by crafted JavaScript code to xst.","status":"published","published":"2019-09-16T17:15:14.293Z","modified":"2026-10-24T10:50:05.777663695Z","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":"2026-11-02T15:44:11.361782Z"}]}}