Vulnerability in org.openapitools:openapi-generator-maven-plugin (CVE-2021-21429)
Summary
Vulnerability in org.openapitools:openapi-generator-maven-plugin (CVE-2021-21429). Risk of unauthorized operations or information disclosure. Exploitable via File.createTempFile. Mitigation: upgrade to 5.1.0 or later.
Original description
The description as published by the source.
OpenAPI Generator allows generation of API client libraries, 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. OpenAPI Generator maven plug-in creates insecure temporary files during the process. The issue has been patched with Files.createTempFile and released in the v5.1.0 stable version.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2021-21429 has been found in org.openapitools:openapi-generator-maven-plugin.
Attackers can target a specific entry point like File.createTempFile over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade org.openapitools:openapi-generator-maven-plugin to 5.1.0 or later.
If unsure, ask your IT team or search "org.openapitools:openapi-generator-maven-plugin CVE-2021-21429" on the vendor's site.
CVE-2021-21429 (org.openapitools:openapi-generator-maven-plugin) — CWE-377
Attack vector: local / no user interaction
Attack surface: File.createTempFile / Files.createTempFile
Patched: 5.1.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-377) exists in org.openapitools:openapi-generator-maven-plugin. Attackers reach the vulnerable code path via File.createTempFile.
Check the vendor advisory for the affected versions of org.openapitools:openapi-generator-maven-plugin. Attack surface: File.createTempFile / Files.createTempFile.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 5.1.0.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで org.openapitools:openapi-generator-maven-plugin を使っているサービスとバージョンを洗い出す。
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2Apply patch patch
Upgrade org.openapitools:openapi-generator-maven-plugin to 5.1.0ステージング環境で 5.1.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
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3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory nvd.nist.gov
- patch github.com
- patch github.com
- web github.com