CVE-2020-15866

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

mruby through 2.1.2-rc has a heap-based buffer overflow in the mrb_yield_with_class function in vm.c because of incorrect VM stack handling. It can be triggered via the stack_copy function.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-787

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/mruby/mruby/issues/5042Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00006.htmlMailing List, Third Party Advisory
https://github.com/mruby/mruby/issues/5042Exploit, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/05/msg00006.htmlMailing List, Third Party Advisory

Timeline

Published: Jul 21, 2020
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2020

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