CVE-2026-38973

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Source

https://cve.org/CVERecord?id=CVE-2026-38973

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-38973.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-38973

Published

2026-07-06T00:00:00Z

Modified

2026-08-12T16:23:55Z

Severity

4.4 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L CVSS Calculator

Summary

[none]

Details

mrubyc through release3.4.1 was found to contain an out-of-bounds read in builtin missing-method lookup inside mrbc_find_method().

Database specific

{
    "cna_assigner": "mitre",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/38xxx/CVE-2026-38973.json"
}

References

Affected packages

Git / github.com/mrubyc/mrubyc

Affected ranges

Type

GIT

Repo

https://github.com/mrubyc/mrubyc

Events

Introduced

Fixed

6782f50de4b7bf60ca3756ffd4287f8258b03fa0

Fixed

f83a8b67ca1c7c62ac0dd548a363d79f767c4e30

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "release3.4.1"
        }
    ],
    "source": [
        "DESCRIPTION",
        "REFERENCES"
    ]
}

Affected versions

Other

beta3

beta4

release1.*

release1.0

release1.1

release1.1RC2

release1.2

release2.*

release2.0

release2.1

release3.*

release3.1

release3.2

release3.2-beta1

release3.2-rc1

release3.3

release3.3.1

release3.4

release3.4.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-38973.json"

vanir_signatures

[
    {
        "deprecated": false,
        "digest": {
            "function_hash": "87977557880429778581926916021940683557",
            "length": 1284
        },
        "id": "CVE-2026-38973-774d1bf4",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/mrubyc/mrubyc/commit/f83a8b67ca1c7c62ac0dd548a363d79f767c4e30",
        "target": {
            "file": "src/class.c",
            "function": "mrbc_find_method"
        }
    },
    {
        "deprecated": false,
        "digest": {
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            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-38973-c5acde94",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/mrubyc/mrubyc/commit/f83a8b67ca1c7c62ac0dd548a363d79f767c4e30",
        "target": {
            "file": "src/class.c"
        }
    }
]

vanir_signatures_modified

"2026-08-12T16:23:55Z"