CVE-2021-3918 (GCVE-0-2021-3918)

Vulnerability from cvelistv5 – Published: 2021-11-13 00:00 – Updated: 2025-01-17 20:02
VLAI?
Title
Prototype Pollution in kriszyp/json-schema
Summary
json-schema is vulnerable to Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Severity ?
9.8 (Critical)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
References
Impacted products
Vendor Product Version
kriszyp kriszyp/json-schema Affected: unspecified , ≤ 0.3.0 (custom)
Create a notification for this product.
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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2025-01-17T20:02:47.966Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
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        "references": [
          {
            "tags": [
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            "url": "https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9"
          },
          {
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            "url": "https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741"
          },
          {
            "name": "[debian-lts-announce] 20221206 [SECURITY] [DLA 3228-1] node-json-schema security update",
            "tags": [
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            "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00013.html"
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          {
            "url": "https://security.netapp.com/advisory/ntap-20250117-0004/"
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        ],
        "title": "CVE Program Container"
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    ],
    "cna": {
      "affected": [
        {
          "product": "kriszyp/json-schema",
          "vendor": "kriszyp",
          "versions": [
            {
              "lessThanOrEqual": "0.3.0",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "json-schema is vulnerable to Improperly Controlled Modification of Object Prototype Attributes (\u0027Prototype Pollution\u0027)"
        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
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              "description": "CWE-1321 Improperly Controlled Modification of Object Prototype Attributes (\u0027Prototype Pollution\u0027)",
              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
        "dateUpdated": "2022-12-06T00:00:00.000Z",
        "orgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
        "shortName": "@huntrdev"
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      "references": [
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          "url": "https://huntr.dev/bounties/bb6ccd63-f505-4e3a-b55f-cd2662c261a9"
        },
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          "url": "https://github.com/kriszyp/json-schema/commit/22f146111f541d9737e832823699ad3528ca7741"
        },
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          "name": "[debian-lts-announce] 20221206 [SECURITY] [DLA 3228-1] node-json-schema security update",
          "tags": [
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          "url": "https://lists.debian.org/debian-lts-announce/2022/12/msg00013.html"
        }
      ],
      "source": {
        "advisory": "bb6ccd63-f505-4e3a-b55f-cd2662c261a9",
        "discovery": "EXTERNAL"
      },
      "title": "Prototype Pollution in kriszyp/json-schema"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "c09c270a-b464-47c1-9133-acb35b22c19a",
    "assignerShortName": "@huntrdev",
    "cveId": "CVE-2021-3918",
    "datePublished": "2021-11-13T00:00:00.000Z",
    "dateReserved": "2021-11-02T00:00:00.000Z",
    "dateUpdated": "2025-01-17T20:02:47.966Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}


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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.