GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2021-23369 (GCVE-0-2021-23369)

Vulnerability from cvelistv5 – Published: 2021-04-12 13:10 – Updated: 2024-09-16 22:46
VLAI
Title
Remote Code Execution (RCE)
Summary
The package handlebars before 4.7.7 are vulnerable to Remote Code Execution (RCE) when selecting certain compiling options to compile templates coming from an untrusted source.
Severity
5.6 (Medium)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
CWE
  • Remote Code Execution (RCE)
Assigner
References
Impacted products
Vendor Product Version CPE status
n/a handlebars Affected: unspecified , < 4.7.7 (custom)
Date Public
2021-04-12 00:00
Credits
Francois Lajeunesse-Robert
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T19:05:55.827Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://snyk.io/vuln/SNYK-JS-HANDLEBARS-1056767"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074950"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074951"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074952"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/handlebars-lang/handlebars.js/commit/b6d3de7123eebba603e321f04afdbae608e8fea8"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/handlebars-lang/handlebars.js/commit/f0589701698268578199be25285b2ebea1c1e427"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20210604-0008/"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "handlebars",
          "vendor": "n/a",
          "versions": [
            {
              "lessThan": "4.7.7",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Francois Lajeunesse-Robert"
        }
      ],
      "datePublic": "2021-04-12T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The package handlebars before 4.7.7 are vulnerable to Remote Code Execution (RCE) when selecting certain compiling options to compile templates coming from an untrusted source."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.6,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "exploitCodeMaturity": "PROOF_OF_CONCEPT",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 5.1,
            "temporalSeverity": "MEDIUM",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Remote Code Execution (RCE)",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-06-04T09:06:15.000Z",
        "orgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
        "shortName": "snyk"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://snyk.io/vuln/SNYK-JS-HANDLEBARS-1056767"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074950"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074951"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074952"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/handlebars-lang/handlebars.js/commit/b6d3de7123eebba603e321f04afdbae608e8fea8"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/handlebars-lang/handlebars.js/commit/f0589701698268578199be25285b2ebea1c1e427"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20210604-0008/"
        }
      ],
      "title": "Remote Code Execution (RCE)",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "report@snyk.io",
          "DATE_PUBLIC": "2021-04-12T13:09:13.776933Z",
          "ID": "CVE-2021-23369",
          "STATE": "PUBLIC",
          "TITLE": "Remote Code Execution (RCE)"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "handlebars",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c",
                            "version_value": "4.7.7"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "Francois Lajeunesse-Robert"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "The package handlebars before 4.7.7 are vulnerable to Remote Code Execution (RCE) when selecting certain compiling options to compile templates coming from an untrusted source."
            }
          ]
        },
        "impact": {
          "cvss": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "LOW",
            "baseScore": 5.6,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "Remote Code Execution (RCE)"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://snyk.io/vuln/SNYK-JS-HANDLEBARS-1056767",
              "refsource": "MISC",
              "url": "https://snyk.io/vuln/SNYK-JS-HANDLEBARS-1056767"
            },
            {
              "name": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074950",
              "refsource": "MISC",
              "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074950"
            },
            {
              "name": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074951",
              "refsource": "MISC",
              "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074951"
            },
            {
              "name": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074952",
              "refsource": "MISC",
              "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074952"
            },
            {
              "name": "https://github.com/handlebars-lang/handlebars.js/commit/b6d3de7123eebba603e321f04afdbae608e8fea8",
              "refsource": "MISC",
              "url": "https://github.com/handlebars-lang/handlebars.js/commit/b6d3de7123eebba603e321f04afdbae608e8fea8"
            },
            {
              "name": "https://github.com/handlebars-lang/handlebars.js/commit/f0589701698268578199be25285b2ebea1c1e427",
              "refsource": "MISC",
              "url": "https://github.com/handlebars-lang/handlebars.js/commit/f0589701698268578199be25285b2ebea1c1e427"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20210604-0008/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20210604-0008/"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
    "assignerShortName": "snyk",
    "cveId": "CVE-2021-23369",
    "datePublished": "2021-04-12T13:10:28.403Z",
    "dateReserved": "2021-01-08T00:00:00.000Z",
    "dateUpdated": "2024-09-16T22:46:07.677Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2021-23369",
      "date": "2026-09-12",
      "epss": "0.07028",
      "percentile": "0.93806"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-23369\",\"sourceIdentifier\":\"report@snyk.io\",\"published\":\"2021-04-12T14:15:14.383\",\"lastModified\":\"2024-11-21T05:51:35.303\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The package handlebars before 4.7.7 are vulnerable to Remote Code Execution (RCE) when selecting certain compiling options to compile templates coming from an untrusted source.\"},{\"lang\":\"es\",\"value\":\"El paquete handlebars versiones anteriores a 4.7.7, son vulnerables a una Ejecuci\u00f3n de C\u00f3digo Remota (RCE) al seleccionar determinadas opciones de compilaci\u00f3n para compilar plantillas que provienen de una fuente no confiable\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"report@snyk.io\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L\",\"baseScore\":5.6,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"LOW\"},\"exploitabilityScore\":2.2,\"impactScore\":3.4},{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":9.8,\"baseSeverity\":\"CRITICAL\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":3.9,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:N/C:P/I:P/A:P\",\"baseScore\":7.5,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":10.0,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:handlebarsjs:handlebars:*:*:*:*:*:node.js:*:*\",\"versionEndExcluding\":\"4.7.7\",\"matchCriteriaId\":\"D57084A5-784A-4392-AF0D-6EB14CF4B573\"}]}]}],\"references\":[{\"url\":\"https://github.com/handlebars-lang/handlebars.js/commit/b6d3de7123eebba603e321f04afdbae608e8fea8\",\"source\":\"report@snyk.io\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/handlebars-lang/handlebars.js/commit/f0589701698268578199be25285b2ebea1c1e427\",\"source\":\"report@snyk.io\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20210604-0008/\",\"source\":\"report@snyk.io\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074950\",\"source\":\"report@snyk.io\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074951\",\"source\":\"report@snyk.io\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074952\",\"source\":\"report@snyk.io\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://snyk.io/vuln/SNYK-JS-HANDLEBARS-1056767\",\"source\":\"report@snyk.io\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/handlebars-lang/handlebars.js/commit/b6d3de7123eebba603e321f04afdbae608e8fea8\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://github.com/handlebars-lang/handlebars.js/commit/f0589701698268578199be25285b2ebea1c1e427\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://security.netapp.com/advisory/ntap-20210604-0008/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074950\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074951\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074952\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://snyk.io/vuln/SNYK-JS-HANDLEBARS-1056767\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-03T02:09:04+00:00",
      "cve": "CVE-2021-23369",
      "id": "CVE-2021-23369",
      "initial_release_date": "2021-04-12T00:00:00+00:00",
      "product_status:fixed": "10",
      "product_status:known_affected": "25",
      "product_status:known_not_affected": "73",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "nodejs-handlebars: Remote code execution when compiling untrusted compile templates with strict:true option",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-23369.json",
      "version": "3"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.