{"api_version":"1","generated_at":"2026-07-23T15:16:47+00:00","cve":"CVE-2021-26707","urls":{"html":"https://cve.report/CVE-2021-26707","api":"https://cve.report/api/cve/CVE-2021-26707.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-26707","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-26707"},"summary":{"title":"CVE-2021-26707","description":"The merge-deep library before 3.0.3 for Node.js can be tricked into overwriting properties of Object.prototype or adding new properties to it. These properties are then inherited by every object in the program, thus facilitating prototype-pollution attacks against applications using this library.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2021-06-02 15:15:00","updated_at":"2022-12-02 19:37:00"},"problem_types":["CWE-1321"],"metrics":[],"references":[{"url":"https://securitylab.github.com/advisories/GHSL-2020-160-merge-deep/","name":"https://securitylab.github.com/advisories/GHSL-2020-160-merge-deep/","refsource":"MISC","tags":[],"title":"GHSL-2020-160: Prototype pollution in Merge-deep - GitHub Security Lab","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://github.com/jonschlinkert/merge-deep/commit/11e5dd56de8a6aed0b1ed022089dbce6968d82a5","name":"https://github.com/jonschlinkert/merge-deep/commit/11e5dd56de8a6aed0b1ed022089dbce6968d82a5","refsource":"MISC","tags":[],"title":"add isValidKey function to ensure only valid keys are merged · jonschlinkert/merge-deep@11e5dd5 · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://security.netapp.com/advisory/ntap-20210716-0008/","name":"https://security.netapp.com/advisory/ntap-20210716-0008/","refsource":"CONFIRM","tags":[],"title":"CVE-2021-26707 Node.js Vulnerability in NetApp Products | NetApp Product Security","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.npmjs.com/package/merge-deep","name":"https://www.npmjs.com/package/merge-deep","refsource":"MISC","tags":[],"title":"merge-deep  -  npm","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-26707","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-26707","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"26707","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"merge-deep_project","cpe5":"merge-deep","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"node.js","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"26707","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"netapp","cpe5":"e-series_performance_analyzer","cpe6":"-","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2021-26707","qid":"982001","title":"Nodejs (npm) Security Update for merge-deep (GHSA-r6rj-9ch6-g264)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2021-26707","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"The merge-deep library before 3.0.3 for Node.js can be tricked into overwriting properties of Object.prototype or adding new properties to it. These properties are then inherited by every object in the program, thus facilitating prototype-pollution attacks against applications using this library."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://www.npmjs.com/package/merge-deep","refsource":"MISC","name":"https://www.npmjs.com/package/merge-deep"},{"url":"https://github.com/jonschlinkert/merge-deep/commit/11e5dd56de8a6aed0b1ed022089dbce6968d82a5","refsource":"MISC","name":"https://github.com/jonschlinkert/merge-deep/commit/11e5dd56de8a6aed0b1ed022089dbce6968d82a5"},{"refsource":"MISC","name":"https://securitylab.github.com/advisories/GHSL-2020-160-merge-deep/","url":"https://securitylab.github.com/advisories/GHSL-2020-160-merge-deep/"},{"refsource":"CONFIRM","name":"https://security.netapp.com/advisory/ntap-20210716-0008/","url":"https://security.netapp.com/advisory/ntap-20210716-0008/"}]}},"nvd":{"publishedDate":"2021-06-02 15:15:00","lastModifiedDate":"2022-12-02 19:37:00","problem_types":["CWE-1321"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL"},"exploitabilityScore":3.9,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":7.5},"severity":"HIGH","exploitabilityScore":10,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:merge-deep_project:merge-deep:*:*:*:*:*:node.js:*:*","versionEndExcluding":"3.0.3","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:netapp:e-series_performance_analyzer:-:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"26707","Ordinal":"201786","Title":"CVE-2021-26707","CVE":"CVE-2021-26707","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"26707","Ordinal":"1","NoteData":"The merge-deep library before 3.0.3 for Node.js can be tricked into overwriting properties of Object.prototype or adding new properties to it. These properties are then inherited by every object in the program, thus facilitating prototype-pollution attacks against applications using this library.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"26707","Ordinal":"2","NoteData":"2021-06-02","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"26707","Ordinal":"3","NoteData":"2021-07-16","Type":"Other","Title":"Modified"}]}}}