gsd-2021-32820
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
Express-handlebars is a Handlebars view engine for Express. Express-handlebars mixes pure template data with engine configuration options through the Express render API. More specifically, the layout parameter may trigger file disclosure vulnerabilities in downstream applications. This potential vulnerability is somewhat restricted in that only files with existing extentions (i.e. file.extension) can be included, files that lack an extension will have .handlebars appended to them. For complete details refer to the referenced GHSL-2021-018 report. Notes in documentation have been added to help users avoid this potential information exposure vulnerability.
Aliases
Aliases
CVE-2021-32820


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-32820",
    "description": "Express-handlebars is a Handlebars view engine for Express. Express-handlebars mixes pure template data with engine configuration options through the Express render API. More specifically, the layout parameter may trigger file disclosure vulnerabilities in downstream applications. This potential vulnerability is somewhat restricted in that only files with existing extentions (i.e. file.extension) can be included, files that lack an extension will have .handlebars appended to them. For complete details refer to the referenced GHSL-2021-018 report. Notes in documentation have been added to help users avoid this potential information exposure vulnerability.",
    "id": "GSD-2021-32820"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-32820"
      ],
      "details": "Express-handlebars is a Handlebars view engine for Express. Express-handlebars mixes pure template data with engine configuration options through the Express render API. More specifically, the layout parameter may trigger file disclosure vulnerabilities in downstream applications. This potential vulnerability is somewhat restricted in that only files with existing extentions (i.e. file.extension) can be included, files that lack an extension will have .handlebars appended to them. For complete details refer to the referenced GHSL-2021-018 report. Notes in documentation have been added to help users avoid this potential information exposure vulnerability.",
      "id": "GSD-2021-32820",
      "modified": "2023-12-13T01:23:09.396235Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
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        "ID": "CVE-2021-32820",
        "STATE": "PUBLIC",
        "TITLE": "File disclosure in Express Handlebars"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "express-handlebars",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c= 5.3.2"
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                "value": "CWE-200 Information Exposure"
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      },
      "references": {
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            "name": "https://securitylab.github.com/advisories/GHSL-2021-018-express-handlebars/",
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          },
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            "refsource": "MISC",
            "url": "https://www.npmjs.com/package/express-handlebars"
          },
          {
            "name": "https://github.com/express-handlebars/express-handlebars/pull/163",
            "refsource": "MISC",
            "url": "https://github.com/express-handlebars/express-handlebars/pull/163"
          },
          {
            "name": "https://github.com/express-handlebars/express-handlebars/commit/78c47a235c4ad7bc2674bddd8ec2721567ed8c72",
            "refsource": "MISC",
            "url": "https://github.com/express-handlebars/express-handlebars/commit/78c47a235c4ad7bc2674bddd8ec2721567ed8c72"
          },
          {
            "name": "https://github.com/express-handlebars/express-handlebars/blob/78c47a235c4ad7bc2674bddd8ec2721567ed8c72/README.md#danger-",
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          }
        ]
      },
      "source": {
        "advisory": "GHSL-2021-018",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c5.3.1",
          "affected_versions": "All versions before 5.3.1",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-200",
            "CWE-937"
          ],
          "date": "2022-02-10",
          "description": "Express-handlebars is a Handlebars view engine for Express. Express-handlebars mixes pure template data with engine configuration options through the Express render API. More specifically, the layout parameter may trigger file disclosure vulnerabilities in downstream applications. This potential vulnerability is somewhat restricted in that only files with existing extentions (i.e. file.extension) can be included, files that lack an extension will have .handlebars appended to them. For complete details refer to the referenced GHSL-2021-018 report. Notes in documentation have been added to help users avoid this potential information exposure vulnerability.",
          "fixed_versions": [
            "5.3.1"
          ],
          "identifier": "CVE-2021-32820",
          "identifiers": [
            "GHSA-fr76-2wp8-fp92",
            "CVE-2021-32820"
          ],
          "not_impacted": "All versions starting from 5.3.1",
          "package_slug": "npm/express-handlebars",
          "pubdate": "2022-02-10",
          "solution": "Upgrade to version 5.3.1 or above.",
          "title": "Exposure of Sensitive Information to an Unauthorized Actor",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-32820",
            "https://github.com/express-handlebars/express-handlebars/pull/163",
            "https://github.com/express-handlebars/express-handlebars/commit/78c47a235c4ad7bc2674bddd8ec2721567ed8c72",
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            "https://www.npmjs.com/package/express-handlebars",
            "https://github.com/advisories/GHSA-fr76-2wp8-fp92"
          ],
          "uuid": "4e2614f2-667e-4d6e-ac83-720447f3b3d2"
        },
        {
          "affected_range": "\u003c=5.3.2",
          "affected_versions": "All versions up to 5.3.2",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-937",
            "CWE-94"
          ],
          "date": "2022-07-02",
          "description": "Express-handlebars is a Handlebars view engine for Express. Express-handlebars mixes pure template data with engine configuration options through the Express render API. More specifically, the layout parameter may trigger file disclosure vulnerabilities in downstream applications. This potential vulnerability is somewhat restricted in that only files with existing extentions (i.e. file.extension) can be included, files that lack an extension will have .handlebars appended to them. For complete details refer to the referenced GHSL-2021-018 report. Notes in documentation have been added to help users avoid this potential information exposure vulnerability.",
          "fixed_versions": [],
          "identifier": "CVE-2021-32820",
          "identifiers": [
            "CVE-2021-32820"
          ],
          "not_impacted": "",
          "package_slug": "npm/express-hbs",
          "pubdate": "2021-05-14",
          "solution": "Unfortunately, there is no solution available yet.",
          "title": "Information Exposure",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-32820"
          ],
          "uuid": "368ffaa7-0516-4db6-b80d-807939698574"
        }
      ]
    },
    "nvd.nist.gov": {
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                "cpe_name": [],
                "versionEndIncluding": "5.3.2",
                "vulnerable": true
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              "name": "https://securitylab.github.com/advisories/GHSL-2021-018-express-handlebars/",
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      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 4.0
        }
      },
      "lastModifiedDate": "2022-07-02T18:24Z",
      "publishedDate": "2021-05-14T19:15Z"
    }
  }
}


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