Vulnerability Database

309,136

Total vulnerabilities in the database

CVE-2020-6838

In mruby 2.1.0, there is a use-after-free in hash_values_at in mrbgems/mruby-hash-ext/src/hash-ext.c.

  • Published: Jan 11, 2020
  • Updated: Nov 9, 2025
  • CVE: CVE-2020-6838
  • Severity: Critical
  • Exploit:

CVSS v3:

  • Severity: Critical
  • Score: 9.8
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS v2:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/Au:N/C:P/I:P/A:P

CWEs:

Software From Fixed in
mruby / mruby 2.1.0 2.1.0.x