CVSS 3.1
5.5 mediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:NCVE-2021-21430
Medium (5.5) in openapi-generator openapi generator. EPSS 0.4% chance of exploitation in the next 30 days. Fixed in org.openapitools:openapi-generator 5.1.0.
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.
Severity
- EPSS
- 0.4% chance of exploitation in the next 30 days; higher than 34% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-668, CWE-269
- Published
- Modified
- Record from
- the NVD, synced
Affected
- openapi-generator:openapi_generator
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-cqxr-xf2w-943w | Maven | org.openapitools:openapi-generator | <5.1.0 | 5.1.0 |
References
- https://github.com/OpenAPITools/openapi-generator/pull/8787
- https://github.com/OpenAPITools/openapi-generator/pull/8791
- https://github.com/OpenAPITools/openapi-generator/security/advisories/GHSA-cqxr-xf2w-943w
- https://github.com/OpenAPITools/openapi-generator/pull/8787
- https://github.com/OpenAPITools/openapi-generator/pull/8791