{"id":"CVE-2018-10191","details":"In versions of mruby up to and including 1.4.0, an integer overflow exists in src/vm.c::mrb_vm_exec() when handling OP_GETUPVAR in the presence of deep scope nesting, resulting in a use-after-free. An attacker that can cause Ruby code to be run can use this to possibly execute arbitrary code.","modified":"2026-05-17T11:55:10.836392486Z","published":"2018-04-17T21:29:00.233Z","database_specific":{"unresolved_ranges":[{"cpes":["cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"],"extracted_events":[{"last_affected":"9.0"}],"source":"CPE_FIELD","vendor_product":"debian:debian_linux"}]},"references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2022/05/msg00006.html"},{"type":"REPORT","url":"https://github.com/mruby/mruby/issues/3995"},{"type":"FIX","url":"https://github.com/mruby/mruby/commit/1905091634a6a2925c911484434448e568330626"}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}