{"id":"CVE-2021-21430","state":"PUBLISHED","title":"Creation of Temporary File in Directory with Insecure Permissions in auto-generated Java, Scala code","description":"OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec. Using `File.createTempFile` in JDK will result in creating and using insecure temporary files that can leave application and system data vulnerable to attacks. Auto-generated code (Java, Scala) that deals with uploading or downloading binary data through API endpoints will create insecure temporary files during the process. Affected generators: `java` (jersey2, okhttp-gson (default library)), `scala-finch`. The issue has been patched with `Files.createTempFile` and released in the v5.1.0 stable version.","publishedAt":"2021-05-10T19:25:12.000Z","updatedAt":"2024-08-03T18:09:16.157Z","severity":{"score":6.2,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["OpenAPITools openapi-generator"],"affected":[{"vendor":"OpenAPITools","product":"openapi-generator","versions":[{"version":"< 5.1.0","status":"affected"}]}],"references":["https://github.com/OpenAPITools/openapi-generator/security/advisories/GHSA-cqxr-xf2w-943w","https://github.com/OpenAPITools/openapi-generator/pull/8791","https://github.com/OpenAPITools/openapi-generator/pull/8787"],"weaknesses":["CWE-269"],"ingestedAt":"2026-10-29T19:47:59.168Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/21xxx/CVE-2021-21430.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-21430","state":"PUBLISHED","datePublished":"2021-05-10T19:25:12.000Z","dateUpdated":"2024-08-03T18:09:16.157Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2020-12-22T00:00:00.000Z"},"containers":{"cna":{"title":"Creation of Temporary File in Directory with Insecure Permissions in auto-generated Java, Scala code","descriptions":[{"lang":"en","value":"OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec. Using `File.createTempFile` in JDK will result in creating and using insecure temporary files that can leave application and system data vulnerable to attacks. Auto-generated code (Java, Scala) that deals with uploading or downloading binary data through API endpoints will create insecure temporary files during the process. Affected generators: `java` (jersey2, okhttp-gson (default library)), `scala-finch`. The issue has been patched with `Files.createTempFile` and released in the v5.1.0 stable version."}],"affected":[{"vendor":"OpenAPITools","product":"openapi-generator","versions":[{"version":"< 5.1.0","status":"affected"}]}],"references":[{"url":"https://github.com/OpenAPITools/openapi-generator/security/advisories/GHSA-cqxr-xf2w-943w","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/OpenAPITools/openapi-generator/pull/8791","tags":["x_refsource_MISC"]},{"url":"https://github.com/OpenAPITools/openapi-generator/pull/8787","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":6.2,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-269","description":"CWE-269: Improper Privilege Management","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","dateUpdated":"2021-05-10T19:25:12.000Z","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa"},"source":{"advisory":"GHSA-cqxr-xf2w-943w","discovery":"UNKNOWN"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"security-advisories@github.com","ID":"CVE-2021-21430","STATE":"PUBLIC","TITLE":"Creation of Temporary File in Directory with Insecure Permissions in auto-generated Java, Scala code"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"openapi-generator","version":{"version_data":[{"version_value":"< 5.1.0"}]}}]},"vendor_name":"OpenAPITools"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec. Using `File.createTempFile` in JDK will result in creating and using insecure temporary files that can leave application and system data vulnerable to attacks. Auto-generated code (Java, Scala) that deals with uploading or downloading binary data through API endpoints will create insecure temporary files during the process. Affected generators: `java` (jersey2, okhttp-gson (default library)), `scala-finch`. 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