{"api_version":"1","generated_at":"2026-07-23T11:39:10+00:00","cve":"CVE-2021-41249","urls":{"html":"https://cve.report/CVE-2021-41249","api":"https://cve.report/api/cve/CVE-2021-41249.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-41249","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-41249"},"summary":{"title":"CVE-2021-41249","description":"GraphQL Playground is a GraphQL IDE for development of graphQL focused applications. All versions of graphql-playground-react older than graphql-playground-react@1.7.28 are vulnerable to compromised HTTP schema introspection responses or schema prop values with malicious GraphQL type names, exposing a dynamic XSS attack surface that can allow code injection on operation autocomplete. In order for the attack to take place, the user must load a malicious schema in graphql-playground. There are several ways this can occur, including by specifying the URL to a malicious schema in the endpoint query parameter. If a user clicks on a link to a GraphQL Playground installation that specifies a malicious server, arbitrary JavaScript can run in the user's browser, which can be used to exfiltrate user credentials or other harmful goals. 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If you are using graphql-playground-react directly in your client app, upgrade to version 1.7.28 or later."}]},"impact":{"cvss":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}]},"references":{"reference_data":[{"name":"https://github.com/graphql/graphql-playground/security/advisories/GHSA-59r9-6jp6-jcm7","refsource":"CONFIRM","url":"https://github.com/graphql/graphql-playground/security/advisories/GHSA-59r9-6jp6-jcm7"},{"name":"https://github.com/graphql/graphiql/security/advisories/GHSA-x4r7-m2q9-69c8","refsource":"MISC","url":"https://github.com/graphql/graphiql/security/advisories/GHSA-x4r7-m2q9-69c8"},{"name":"https://github.com/graphql/graphql-playground/commit/b8a956006835992f12c46b90384a79ab82bcadad","refsource":"MISC","url":"https://github.com/graphql/graphql-playground/commit/b8a956006835992f12c46b90384a79ab82bcadad"}]},"source":{"advisory":"GHSA-59r9-6jp6-jcm7","discovery":"UNKNOWN"}},"nvd":{"publishedDate":"2021-11-04 20:15:00","lastModifiedDate":"2021-11-09 15:47:00","problem_types":["CWE-79"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE","baseScore":4.7,"baseSeverity":"MEDIUM"},"exploitabilityScore":1.6,"impactScore":2.7},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:H/Au:N/C:N/I:P/A:N","accessVector":"NETWORK","accessComplexity":"HIGH","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"PARTIAL","availabilityImpact":"NONE","baseScore":2.6},"severity":"LOW","exploitabilityScore":4.9,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:graphql:playground:*:*:*:*:*:node.js:*:*","versionEndExcluding":"1.7.28","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"41249","Ordinal":"216938","Title":"CVE-2021-41249","CVE":"CVE-2021-41249","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"41249","Ordinal":"1","NoteData":"GraphQL Playground is a GraphQL IDE for development of graphQL focused applications. All versions of graphql-playground-react older than graphql-playground-react@1.7.28 are vulnerable to compromised HTTP schema introspection responses or schema prop values with malicious GraphQL type names, exposing a dynamic XSS attack surface that can allow code injection on operation autocomplete. In order for the attack to take place, the user must load a malicious schema in graphql-playground. There are several ways this can occur, including by specifying the URL to a malicious schema in the endpoint query parameter. If a user clicks on a link to a GraphQL Playground installation that specifies a malicious server, arbitrary JavaScript can run in the user's browser, which can be used to exfiltrate user credentials or other harmful goals. If you are using graphql-playground-react directly in your client app, upgrade to version 1.7.28 or later.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"41249","Ordinal":"2","NoteData":"2021-11-04","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"41249","Ordinal":"3","NoteData":"2021-11-04","Type":"Other","Title":"Modified"}]}}}