CVE-2022-1212

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Source
https://cve.org/CVERecord?id=CVE-2022-1212
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-1212.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2022-1212
Downstream
Related
Published
2022-04-05T03:45:19Z
Modified
2026-08-12T12:59:05Z
Severity
  • 9.3 (Critical) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:H CVSS Calculator
Summary
Use-After-Free in str_escape in mruby/mruby in mruby/mruby
Details

Use-After-Free in str_escape in mruby/mruby in GitHub repository mruby/mruby prior to 3.2. Possible arbitrary code execution if being exploited.

Database specific 
{
    "cna_assigner": "@huntrdev",
    "cwe_ids": [
        "CWE-416"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/1xxx/CVE-2022-1212.json"
}
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
Introduced
6f2efebbb9e0d43ca471d89ea76f396baa43eb62
Fixed
3cf291f72224715942beaf8553e42ba8891ab3c6
Database specific
Show details 
{
    "cpe": [
        "cpe:2.3:a:mruby:mruby:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:mruby:mruby:3.1.0:rc:*:*:*:*:*:*",
        "cpe:2.3:a:mruby:mruby:3.1.0:rc2:*:*:*:*:*:*"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "3.0.0"
        },
        {
            "introduced": "3.1.0-rc"
        },
        {
            "last_affected": "3.1.0-rc"
        },
        {
            "introduced": "3.1.0-rc2"
        },
        {
            "last_affected": "3.1.0-rc2"
        }
    ],
    "source": [
        "CPE_RANGE",
        "CPE_STRING",
        "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
3.1.0-rc
3.1.0-rc2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-1212.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "28816548528905720649862019184751322250",
                "79278007044046907486740057404685840649",
                "135726178160490072428705279703225416342",
                "107153563613154327891966600890465615498",
                "325757857538324008892602896063753028600",
                "73006474744097308202663858425091349370",
                "239774746630256573548629013304439111470"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2022-1212-4c5992ef",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/mruby/mruby/commit/3cf291f72224715942beaf8553e42ba8891ab3c6",
        "target": {
            "file": "src/vm.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "194993650800455606629939465898089039982",
            "length": 36872
        },
        "id": "CVE-2022-1212-7f1c5dd0",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/mruby/mruby/commit/3cf291f72224715942beaf8553e42ba8891ab3c6",
        "target": {
            "file": "src/vm.c",
            "function": "mrb_vm_exec"
        }
    }
]
vanir_signatures_modified 
"2026-08-12T12:59:05Z"