CVE-2021-4188

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Source
https://cve.org/CVERecord?id=CVE-2021-4188
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-4188.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-4188
Downstream
Published
2021-12-30T07:15:06Z
Modified
2026-07-08T23:58:00Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

mruby is vulnerable to NULL Pointer Dereference

References

Affected packages

Git / github.com/mruby/mruby

Affected ranges

Type
GIT
Repo
https://github.com/mruby/mruby
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last Affected
0f45836b5954accf508f333f932741b925214471
Fixed
27d1e0132a0804581dca28df042e7047fd27eaa8
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:mruby:mruby:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "3.0.0"
        }
    ],
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

Affected versions

1.*
1.0.0
1.1.0
1.2.0
3.*
3.0.0
3.0.0-preview
3.0.0-rc

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-4188.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "function_hash": "37954158918689870791588392275949326726",
            "length": 890
        },
        "id": "CVE-2021-4188-9967f21e",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/mruby/mruby/commit/27d1e0132a0804581dca28df042e7047fd27eaa8",
        "target": {
            "file": "src/array.c",
            "function": "mrb_ary_shift_m"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "106015773944940121631457516801267141597",
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                "147759857033709860589441019877560062090",
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                "254278044406850844972228896550156874436",
                "131457773645096981598414092035754655768",
                "38924608948513807081127574170593596575",
                "147897857018675925285525009373532303328"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2021-4188-ec0cc330",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/mruby/mruby/commit/27d1e0132a0804581dca28df042e7047fd27eaa8",
        "target": {
            "file": "src/array.c"
        }
    }
]
vanir_signatures_modified 
"2026-07-08T23:58:00Z"