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    2 vulnerabilities by Gin-Quin

    CVE-2021-48012 (GCVE-0-2021-48012)

    Vulnerability from nvd – Published: 2026-10-12 20:55 – Updated: 2026-10-12 20:55
    VLAI
    Title
    fast-toml through 0.5.4 Prototype Pollution via __proto__ Keys in Parsed TOML
    Summary
    fast-toml through 0.5.4 contains a prototype pollution vulnerability that allows attackers to modify Object.prototype by supplying TOML containing __proto__, constructor or prototype key segments. Attackers can pass [__proto__] or [constructor.prototype] table headers or __proto__.x dotted keys to parse() to pollute all objects, causing denial of service or authorization bypass.
    Severity
    8.8 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
    8.2 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
    CWE
    • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 6045 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    Gin-Quin fast-toml Affected: 0 , ≤ 0.5.4 (semver)
    		Create a notification for this product.
    Date Public
    2021-01-14 00:00
    Credits
    Abdulloh Nuriddinov Asjidkalam gnsehfvlr
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:npm/fast-toml",
          "product": "fast-toml",
          "repo": "https://github.com/Gin-Quin/fast-toml",
          "vendor": "Gin-Quin",
          "versions": [
            {
              "lessThanOrEqual": "0.5.4",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Abdulloh Nuriddinov"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Asjidkalam"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "gnsehfvlr"
        }
      ],
      "datePublic": "2021-01-14T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "fast-toml through 0.5.4 contains a prototype pollution vulnerability that allows attackers to modify Object.prototype by supplying TOML containing __proto__, constructor or prototype key segments. Attackers can pass [__proto__] or [constructor.prototype] table headers or __proto__.x dotted keys to parse() to pollute all objects, causing denial of service or authorization bypass."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "LOW",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1321",
              "description": "Improperly Controlled Modification of Object Prototype Attributes (\u0027Prototype Pollution\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-12T20:55:05.966Z",
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          "name": "GitHub Issue #8",
          "tags": [
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          "url": "https://github.com/Gin-Quin/fast-toml/issues/8"
        },
        {
          "name": "GitHub Pull Request #3",
          "tags": [
            "issue-tracking",
            "patch"
          ],
          "url": "https://github.com/Gin-Quin/fast-toml/pull/3"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/Gin-Quin/fast-toml"
        },
        {
          "name": "VulnCheck Advisory: fast-toml through 0.5.4 Prototype Pollution via __proto__ Keys in Parsed TOML",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/fast-toml-through-0.5.4-prototype-pollution-via-proto-keys-in-parsed-toml"
        }
      ],
      "title": "fast-toml through 0.5.4 Prototype Pollution via __proto__ Keys in Parsed TOML",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2021-48012",
    "datePublished": "2026-10-12T20:55:05.966Z",
    "dateReserved": "2026-10-12T19:37:38.614Z",
    "dateUpdated": "2026-10-12T20:55:05.966Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

    CVE-2021-48012 (GCVE-0-2021-48012)

    Vulnerability from cvelistv5 – Published: 2026-10-12 20:55 – Updated: 2026-10-12 20:55
    VLAI
    Title
    fast-toml through 0.5.4 Prototype Pollution via __proto__ Keys in Parsed TOML
    Summary
    fast-toml through 0.5.4 contains a prototype pollution vulnerability that allows attackers to modify Object.prototype by supplying TOML containing __proto__, constructor or prototype key segments. Attackers can pass [__proto__] or [constructor.prototype] table headers or __proto__.x dotted keys to parse() to pollute all objects, causing denial of service or authorization bypass.
    Severity
    8.8 (High)
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N
    8.2 (High)
    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L
    CWE
    • CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
    Assigner
    VulnCheck CNA under the mitre root
    CNA scorecard B 84/100 over 6045 records in the last 180 days details
    References
    Impacted products
    Vendor Product Version
    Gin-Quin fast-toml Affected: 0 , ≤ 0.5.4 (semver)
    		Create a notification for this product.
    Date Public
    2021-01-14 00:00
    Credits
    Abdulloh Nuriddinov Asjidkalam gnsehfvlr
    Show details on NVD website
    To clipboard 

    {
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:npm/fast-toml",
          "product": "fast-toml",
          "repo": "https://github.com/Gin-Quin/fast-toml",
          "vendor": "Gin-Quin",
          "versions": [
            {
              "lessThanOrEqual": "0.5.4",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Abdulloh Nuriddinov"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Asjidkalam"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "gnsehfvlr"
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      ],
      "datePublic": "2021-01-14T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "fast-toml through 0.5.4 contains a prototype pollution vulnerability that allows attackers to modify Object.prototype by supplying TOML containing __proto__, constructor or prototype key segments. Attackers can pass [__proto__] or [constructor.prototype] table headers or __proto__.x dotted keys to parse() to pollute all objects, causing denial of service or authorization bypass."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N",
            "version": "4.0",
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            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
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            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
            "version": "3.1"
          },
          "format": "CVSS"
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      ],
      "problemTypes": [
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          "descriptions": [
            {
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              "description": "Improperly Controlled Modification of Object Prototype Attributes (\u0027Prototype Pollution\u0027)",
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              "type": "CWE"
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          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-12T20:55:05.966Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
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          "url": "https://github.com/Gin-Quin/fast-toml/pull/3"
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      ],
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