CVE-2022-0080

Heap-based Buffer Overflow in mruby/mruby

8.2 HighFix available

mruby is vulnerable to Heap-based Buffer Overflow

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: High
Integrity: Low
Availability: None

Exploit likelihood

1.63%Up 0.7 points since Feb 8, 2022

What each source reports

CVE List 8.2

Heap-based Buffer Overflow in mruby/mruby

mruby is vulnerable to Heap-based Buffer Overflow

Record: CVE-2022-0080
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
CVSS 3.0: 8.2 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Weakness: CWE-122, CWE-122
Updated: 2026-11-02

EUVDEUVD-2022-15300 8.2

mruby is vulnerable to Heap-based Buffer Overflow

Record: EUVD-2022-15300
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-8vcc-hrhr-q8hf 9.8

mruby is vulnerable to Heap-based Buffer Overflow

mruby is vulnerable to Heap-based Buffer Overflow

Record: GHSA-8vcc-hrhr-q8hf
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-122
Updated: 2026-11-02

NVD 9.8

mruby is vulnerable to Heap-based Buffer Overflow

Record: CVE-2022-0080
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
CVSS 3.0: 8.2 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-122
Updated: 2026-11-02

OSVALPINE-CVE-2022-0080 9.8

mruby is vulnerable to Heap-based Buffer Overflow

Record: ALPINE-CVE-2022-0080
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-03

OSV 8.2

Heap-based Buffer Overflow in mruby/mruby

mruby is vulnerable to Heap-based Buffer Overflow

Record: CVE-2022-0080
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Weakness: CWE-122
Updated: 2026-11-02

OSVDEBIAN-CVE-2022-0080 9.8

mruby is vulnerable to Heap-based Buffer Overflow

Record: DEBIAN-CVE-2022-0080
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-03

OSVUBUNTU-CVE-2022-0080 8.2

mruby is vulnerable to Heap-based Buffer Overflow

Record: UBUNTU-CVE-2022-0080
CVSS 3.1: 8.2 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
CVSS 3.0: 8.2 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVopenSUSE-SU-2024:11753-1 No score

libmruby3-3.0.0-3.1 on GA media

These are all security issues fixed in the libmruby3-3.0.0-3.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:11753-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`mruby` Alpine:v3.17	before 3.1.0-r0	3.1.0-r0
`mruby` Alpine:v3.18	before 3.1.0-r0	3.1.0-r0
`mruby` Alpine:v3.19	before 3.1.0-r0	3.1.0-r0
`mruby` Alpine:v3.20	before 3.1.0-r0	3.1.0-r0
`mruby` Alpine:v3.21	before 3.1.0-r0	3.1.0-r0
`mruby` Alpine:v3.22	before 3.1.0-r0	3.1.0-r0
`mruby` Alpine:v3.23	before 3.1.0-r0	3.1.0-r0
`mruby` Alpine:v3.24	before 3.1.0-r0	3.1.0-r0
`mruby` Debian:12	before 3.0.0-3	3.0.0-3
`mruby` Debian:13	before 3.0.0-3	3.0.0-3

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Affected packages
Package	Affected	Fixed
`mruby` Debian:14	before 3.0.0-3	3.0.0-3
`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 2 CVEs	before 3.0.0-3.1	3.0.0-3.1

History

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

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

In short

CVE-2022-0080 is a high vulnerability (CVSS 8.2) in Mruby, published January 2, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.63%, the 76th percentile. Fixed in mruby 3.1.0-r0.

References

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