CVE-2022-0623

Out-of-bounds Read in mruby/mruby

6.5 Medium

Out-of-bounds Read in Homebrew mruby prior to 3.2.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: Low

Exploit likelihood

1.64%Up 0.8 points since Feb 17, 2022

What each source reports

CVE List Score used 6.5

Out-of-bounds Read in mruby/mruby

Out-of-bounds Read in Homebrew mruby prior to 3.2.

Record: CVE-2022-0623
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Weakness: CWE-125
Updated: 2026-11-02

EUVDEUVD-2022-15721 6.5

Out-of-bounds Read in Homebrew mruby prior to 3.2.

Record: EUVD-2022-15721
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Updated: 2026-11-03

GitHub AdvisoriesGHSA-ff35-7f56-3w6p No score

Out-of-bounds Read in Homebrew mruby prior to 3.2.

Out-of-bounds Read in Homebrew mruby prior to 3.2.

Record: GHSA-ff35-7f56-3w6p
Weakness: CWE-125
Updated: 2026-11-02

NVD 9.1

Out-of-bounds Read in Homebrew mruby prior to 3.2.

Record: CVE-2022-0623
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
CVSS 2.0: 6.4 MediumAV:N/AC:L/Au:N/C:P/I:N/A:P
Weakness: CWE-125
Updated: 2026-11-02

OSV 6.5

Out-of-bounds Read in mruby/mruby

Out-of-bounds Read in Homebrew mruby prior to 3.2.

Record: CVE-2022-0623
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Weakness: CWE-125
Updated: 2026-11-02

OSVUBUNTU-CVE-2022-0623 9.1

Out-of-bounds Read in Homebrew mruby prior to 3.2.

Record: UBUNTU-CVE-2022-0623
CVSS 3.1: 9.1 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CVSS 3.0: 6.5 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Updated: 2026-11-02

OSVopenSUSE-SU-2025:15333-1 No score

libmruby3_4_0-3.4.0-1.1 on GA media

These are all security issues fixed in the libmruby3_4_0-3.4.0-1.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2025:15333-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`mruby` Ubuntu:16.04:LTS	All versions, plus listed versions 1.1.0+20150817+gita1731254-11.1.0+20150906+git1cbbb7e1-11.2.0+20160315+git4f20d58a-1	None known
`mruby` Ubuntu:18.04:LTS	All versions, plus listed versions 1.3.0-11.3.0+20170925+git38185028-11.3.0+20171029+git77edafb0-11.4.0-1	None known
`mruby` Ubuntu:20.04:LTS	All versions, plus listed versions 2.0.0-1	None known
`mruby` Ubuntu:22.04:LTS	All versions, plus listed versions 2.1.2-33.0.0-13.0.0-3	None known
`mruby` Ubuntu:24.04:LTS	All versions, plus listed versions 3.2.0-13.2.0-2	None known
`mruby` Ubuntu:25.10	All versions, plus listed versions 3.3.0-1	None known
`mruby` Ubuntu:26.10	All versions, plus listed versions 3.4.0-23.4.0-34.0.0-1	None known
`mruby` Ubuntu:26.04:LTS	All versions, plus listed versions 3.3.0-13.4.0-2	None known
`mruby` openSUSE:Tumbleweed From an advisory covering 4 CVEs	before 3.4.0-1.1	3.4.0-1.1

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2022-0623 is a medium vulnerability (CVSS 6.5) in Mruby, published February 17, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.64%, the 76th percentile. No source names a fixed version.

References

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