Vulnerability-Lookup

JVNDB-2026-000168

Vulnerability from jvndb - Published: 2026-11-09 04:50 - Updated:2026-11-09 04:50

Severity

4.3 (Medium) - cvssV3_0 - CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Summary

Effekseer improperly validates input data

Details

Effekseer consists of a particle effect editing tool and a runtime to play back the effects. Effekseer runtime is expected to be embedded in the applications such as games and 3D CG viewers. Effekseer improperly validates input data ("effect file"), which may cause out-of-bounds read.

Improper handling of structural elements (CWE-237) - CVE-2026-120386

Yukimura Aneha reported this vulnerability to IPA. JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

References

Type

URL

	JVN	https://jvn.jp/en/jp/JVN56286875/index.html
	CVE	https://www.cve.org/CVERecord?id=CVE-2026-120386
	No Mapping(CWE-Other)	https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html

Impacted products

Vendor

Product

Effekseer

Show details on JVN DB website

JSON

To clipboard

{
  "@rdf:about": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000168.html",
  "dc:date": "2026-11-09T13:50+09:00",
  "dcterms:issued": "2026-11-09T13:50+09:00",
  "dcterms:modified": "2026-11-09T13:50+09:00",
  "description": "Effekseer consists of a particle effect editing tool and a runtime to play back the effects. Effekseer runtime is expected to be embedded in the applications such as games and 3D CG viewers.\r\nEffekseer improperly validates input data (\"effect file\"), which may cause out-of-bounds read.\u003ca href=\u0027https://cwe.mitre.org/data/definitions/237.html\u0027 target=\u0027_blank\u0027\u003e\u003c/a\u003e\u003cul\u003e\u003cli\u003eImproper handling of structural elements (CWE-237) - CVE-2026-120386\u003c/li\u003e\u003c/ul\u003eYukimura Aneha reported this vulnerability to IPA.\r\nJPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.",
  "link": "https://jvndb.jvn.jp/en/contents/2026/JVNDB-2026-000168.html",
  "sec:cpe": {
    "#text": "cpe:/a:misc:effekseer_effekseer",
    "@product": "Effekseer",
    "@vendor": "Effekseer",
    "@version": "2.2"
  },
  "sec:cvss": {
    "@score": "4.3",
    "@severity": "Medium",
    "@type": "Base",
    "@vector": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
    "@version": "3.0"
  },
  "sec:identifier": "JVNDB-2026-000168",
  "sec:references": [
    {
      "#text": "https://jvn.jp/en/jp/JVN56286875/index.html",
      "@id": "JVN#56286875",
      "@source": "JVN"
    },
    {
      "#text": "https://www.cve.org/CVERecord?id=CVE-2026-120386",
      "@id": "CVE-2026-120386",
      "@source": "CVE"
    },
    {
      "#text": "https://www.ipa.go.jp/en/security/vulnerabilities/cwe.html",
      "@id": "CWE-Other",
      "@title": "No Mapping(CWE-Other)"
    }
  ],
  "title": "Effekseer improperly validates input data"
}

CVE-2026-120386 (GCVE-0-2026-120386)

Vulnerability from cvelistv5 – Published: 2026-11-09 07:44 – Updated: 2026-11-09 07:44

Summary

Effekseer improperly validates "effect" files. When a crafted effect file is loaded to the affected runtime, the host process may be forced to crash.

Severity

4.3 (Medium)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

5.1 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

CWE

CWE-237 - Improper handling of structural elements

Assigner

jpcert CNA

References

3 references

URL	Tags
https://github.com/effekseer/Effekseer/releases/t…
https://github.com/effekseer/Effekseer/commit/6cf…
https://jvn.jp/en/jp/JVN56286875/

Impacted products

1 product

Vendor	Product	Version
Effekseer	Effekseer	Affected: 0 , ≤ 1.80.7 (semver)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Effekseer",
          "vendor": "Effekseer",
          "versions": [
            {
              "lessThanOrEqual": "1.80.7",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Effekseer improperly validates \"effect\" files. When a crafted effect file is loaded to the affected runtime, the host process may be forced to crash."
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
            "version": "3.0"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        },
        {
          "cvssV4_0": {
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-237",
              "description": "Improper handling of structural elements",
              "lang": "en-US",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-09T07:44:40.532Z",
        "orgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
        "shortName": "jpcert"
      },
      "references": [
        {
          "url": "https://github.com/effekseer/Effekseer/releases/tag/1808"
        },
        {
          "url": "https://github.com/effekseer/Effekseer/commit/6cf1cb853383765153219ba5ce9b47eff5ad8398"
        },
        {
          "url": "https://jvn.jp/en/jp/JVN56286875/"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "ede6fdc4-6654-4307-a26d-3331c018e2ce",
    "assignerShortName": "jpcert",
    "cveId": "CVE-2026-120386",
    "datePublished": "2026-11-09T07:44:40.532Z",
    "dateReserved": "2026-11-02T06:51:45.477Z",
    "dateUpdated": "2026-11-09T07:44:40.532Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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