Oracle Helidon vulnerabilities

115 CVEs affecting Oracle Helidon, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-87289, published 2026-09-15.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2021-29425, published 2021-04-13. Medium severity, CVSS 4.8. EPSS: 10.5% chance of exploitation in the next 30 days. In Apache Commons IO before 2.7, When invoking the method FileNameUtils.normalize with an improper input string, like "//../foo", or "\\..\foo", the result would be the same value, thus possibly…
CVE-2021-37136, published 2021-10-19. High severity, CVSS 7.5. EPSS: 5.9% chance of exploitation in the next 30 days. The Bzip2 decompression decoder function doesn't allow setting size restrictions on the decompressed output data (which affects the allocation size used during decompression). All users of…
CVE-2021-21409, published 2021-03-30. Medium severity, CVSS 5.9. EPSS: 4.9% chance of exploitation in the next 30 days. Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty…
CVE-2021-43797, published 2021-12-09. Medium severity, CVSS 6.5. EPSS: 2.9% chance of exploitation in the next 30 days. Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. Netty prior to version 4.1.71.Final skips…
CVE-2022-21404, published 2022-04-19. High severity, CVSS 8.1. EPSS: 1.9% chance of exploitation in the next 30 days. Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Reactive WebServer). Supported versions that are affected are 1.4.10 and 2.0.0-RC1. Difficult to exploit vulnerability…
CVE-2026-73921, published 2026-08-18. Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days. Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 1.0.0-1.4.19. Easily exploitable vulnerability allows…
CVE-2026-73912, published 2026-08-18. Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days. Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows…
CVE-2026-73905, published 2026-08-18. Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days. Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 4.0.0-4.4.1. Easily exploitable vulnerability allows…
CVE-2026-71164, published 2026-08-18. Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days. Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 3.0.0-3.2.17. Easily exploitable vulnerability allows…
CVE-2026-71152, published 2026-08-18. Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days. Vulnerability in the Helidon product of Oracle Fusion Middleware (component: Imperative Web Server). Supported versions that are affected are 3.0.0-3.2.17 and 4.0.0-4.4.1. Easily exploitable…

Latest

CVE-2026-87289, published 2026-09-15. High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days. Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webserver-static-content). Supported versions that are affected are 4.0.0-4.5.4. Easily exploitable vulnerability…
CVE-2026-83488, published 2026-09-15. Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days. Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-microprofile-security). Supported versions that are affected are 4.0.0-4.5.4. Easily exploitable vulnerability…
CVE-2026-83480, published 2026-09-15. Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days. Vulnerability in the Helidon product of Oracle Fusion Middleware (component: WebSocket). Supported versions that are affected are 4.0.0-4.5.4. Easily exploitable vulnerability allows unauthenticated…
CVE-2026-83460, published 2026-09-15. Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days. Vulnerability in the Helidon product of Oracle Fusion Middleware (component: LRA). Supported versions that are affected are 4.0.0-4.5.4. Easily exploitable vulnerability allows unauthenticated…
CVE-2026-83459, published 2026-09-15. Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days. Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-media-multipart). Supported versions that are affected are 3.0.0-3.2.20. Easily exploitable vulnerability allows…
CVE-2026-83458, published 2026-09-15. Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days. Vulnerability in the Helidon product of Oracle Fusion Middleware (component: JSON). Supported versions that are affected are 4.0.0-4.5.4. Easily exploitable vulnerability allows unauthenticated…
CVE-2026-83439, published 2026-09-15. High severity, CVSS 8.1. EPSS: 0.4% chance of exploitation in the next 30 days. Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-security-providers-idcs-mapper). Supported versions that are affected are 3.0.0-3.2.20 and 4.0.0-4.5.4. Easily…
CVE-2026-83330, published 2026-09-15. High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days. Vulnerability in the Helidon product of Oracle Fusion Middleware (component: WebSocket). Supported versions that are affected are 4.0.0-4.5.4. Easily exploitable vulnerability allows unauthenticated…
CVE-2026-83281, published 2026-09-15. High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days. Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webserver). Supported versions that are affected are 4.0.0-4.5.4. Easily exploitable vulnerability allows…
CVE-2026-83280, published 2026-09-15. High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days. Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webserver-http2). Supported versions that are affected are 4.0.0-4.5.4. Easily exploitable vulnerability allows…