Helidon vulnerabilities
129 known CVE vulnerabilities in Helidon, translated and rated.
- CVE-2026-101588Medium
Vulnerability in Helidon (component WebSocket) affecting versions 4.0.0-4.5.5 and 27.0.0. Allows unauthenticated attacker with network access via HTTP to gain unauthorized read access to a subset of Helidon data.
- CVE-2026-101586Medium
Vulnerability in Helidon (component helidon-webclient) affecting versions 4.0.0-4.5.5 and 27.0.0. Allows unauthenticated attacker with network access via HTTP to gain unauthorized read access to a subset of Helidon data.
- CVE-2026-101582Medium
Vulnerability in Helidon (component helidon-integrations-vault) affecting versions 4.0.0-4.5.5. Allows unauthenticated attacker with network access via HTTP to gain unauthorized read access to a subset of Helidon data; attacks may significantly impact additional products (scope change).
- CVE-2026-101580Medium
Vulnerability in Helidon (component helidon-security-providers-jwt) affecting versions 4.0.0-4.5.5 and 27.0.0. Allows unauthenticated attacker with network access via HTTP to gain unauthorized read access to a subset of Helidon data; attacks may significantly impact additional products (scope change).
- CVE-2026-101578Medium
Vulnerability in Helidon (component helidon-security-providers-google-login) affecting versions 4.0.0-4.5.5. Allows unauthenticated attacker with network access via HTTP to gain unauthorized read access to a subset of Helidon data.
- CVE-2026-101577Low
Vulnerability in the Helidon product (component: helidon-cors) affecting versions 4.0.0-4.5.5. A difficult to exploit vulnerability requires human interaction and allows an unauthenticated attacker with network access via HTTP to gain unauthorized update, insert or delete access to some data.
- CVE-2026-101576Low
Vulnerability in the Helidon product (component: LRA) affecting versions 4.0.0-4.5.5. A difficult to exploit vulnerability allows an unauthenticated attacker with network access via HTTP to gain unauthorized read access to a subset of Helidon accessible data.
- CVE-2026-101574Medium
Vulnerability in Oracle Fusion Middleware's Helidon product (component: OIDC) affecting versions 4.0.0-4.5.5 and 27.0.0. A difficult-to-exploit flaw allows an unauthenticated network attacker via HTTP to access critical data and modify some Helidon data, requiring user interaction and potentially impacting additional products.
- CVE-2026-101573Medium
Vulnerability in Oracle Fusion Middleware's Helidon product (component: helidon-security-providers-http-auth) affecting versions 3.0.0-3.2.21, 4.0.0-4.5.5 and 27.0.0. A difficult-to-exploit flaw allows an unauthenticated network attacker via HTTP to gain unauthorized access to critical Helidon data, potentially impacting additional products.
- CVE-2026-101571Medium
Vulnerability in Oracle Fusion Middleware's Helidon product (component: helidon-security-providers-idcs-mapper) affecting versions 3.0.0-3.2.21 and 4.0.0-4.5.5. A difficult-to-exploit flaw allows a low-privileged attacker logged into the infrastructure to gain unauthorized access to critical Helidon data, potentially impacting additional products.
- CVE-2026-101568Medium
Vulnerability in Oracle Fusion Middleware's Helidon product (component: helidon-health) affecting versions 3.0.0-3.2.21, 4.0.0-4.5.5 and 27.0.0. An easily exploitable flaw allows an unauthenticated network attacker via HTTP to gain unauthorized read access to a subset of Helidon data.
- CVE-2026-73930Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 3.0.0-3.2.19 and 4.0.0-4.5.2. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to perform unauthorized creation, deletion, or modification of data, unauthorized read access to a subset of data, and cause partial denial of service. Attacks may impact additional products (scope change). CVSS score 9.9.
- CVE-2026-73924Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server) versions 1.0.0-1.4.18. Allows unauthenticated attacker via HTTP to perform unauthorized creation, deletion, or modification of data and access data. CVSS 9.1.
- CVE-2026-73922Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server) versions 1.0.0-1.4.18. Allows unauthenticated attacker via HTTP to perform unauthorized creation, deletion, or modification of data and access data. CVSS 9.1.
- CVE-2026-73921Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 1.0.0-1.4.19. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to take over Helidon. CVSS score 9.8.
- CVE-2026-73920Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server) versions 4.0.0-4.4.1. Allows unauthenticated attacker via HTTP to perform unauthorized creation, deletion, or modification of data, access data, and cause partial denial of service. CVSS 9.4.
- CVE-2026-73917Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 4.0.0-4.4.1. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to perform unauthorized creation, deletion, or modification of data and unauthorized access to data. CVSS score 9.1.
- CVE-2026-73916Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 3.0.0-3.2.17. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to perform unauthorized creation, deletion, or modification of data and unauthorized access to data. CVSS score 9.1.
- CVE-2026-73912Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 4.0.0-4.4.1. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to take over Helidon. CVSS score 9.8.
- CVE-2026-73905Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) versions 4.0.0-4.4.1. Easily exploitable by unauthenticated attacker with network access via HTTP, allowing takeover of Helidon. CVSS 9.8 (high impact on confidentiality, integrity, and availability).
- CVE-2026-73866Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 4.0.0-4.4.1. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to perform unauthorized creation, deletion, or modification of data and unauthorized access to data. CVSS score 9.1.
- CVE-2026-73865Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server) versions 3.0.0-3.2.17. Allows unauthenticated attacker via HTTP to perform unauthorized creation, deletion, or modification of data and access data. CVSS 9.1.
- CVE-2026-71167Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server) versions 4.0.0-4.4.1. Allows unauthenticated attacker via HTTP to perform unauthorized creation, deletion, or modification of data, access data, and cause partial denial of service. CVSS 9.4.
- CVE-2026-71166Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 3.0.0-3.2.17. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to perform unauthorized creation, deletion, or modification of data, unauthorized access to data, and cause partial denial of service. CVSS score 9.4.
- CVE-2026-71164Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 3.0.0-3.2.17. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to take over Helidon. CVSS score 9.8.
- CVE-2026-71152Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 3.0.0-3.2.17 and 4.0.0-4.4.1. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to take over Helidon. CVSS score 9.8.
- CVE-2026-71074Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server component) affects versions 1.0.0-1.4.19 and 3.0.0-3.2.17. Easily exploitable flaw allows unauthenticated attacker with network access via HTTP to take over Helidon. CVSS score 9.8.
- CVE-2026-71065Critical
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server) versions 3.0.0-3.2.17. Allows unauthenticated attacker via HTTP to gain unauthorized access to data and perform unauthorized update, insert, or delete of some data. Attacks may impact additional products (scope change). CVSS 9.3.
- CVE-2026-101587Medium
Vulnerability in Helidon (component helidon-webclient-http1) affecting versions 4.0.0-4.5.5 and 27.0.0. Allows unauthenticated attacker with network access via HTTP to cause a partial denial of service (partial DoS) of Helidon.
- CVE-2026-101584Medium
Vulnerability in Helidon (component helidon-webclient-websocket) affecting versions 4.0.0-4.5.5 and 27.0.0. Allows unauthenticated attacker with network access via HTTP to gain unauthorized read access to a subset of Helidon data and cause a partial denial of service (partial DoS).
- CVE-2026-101581Medium
Vulnerability in Helidon (component helidon-webclient-dns-resolver-round-robin) affecting versions 4.0.0-4.5.5 and 27.0.0. Allows unauthenticated attacker with network access via DNS to gain unauthorized update, insert or delete access to some Helidon data and cause a partial denial of service (partial DoS).
- CVE-2026-101575Medium
Vulnerability in Helidon (component LRA) affecting versions 4.0.0-4.5.5. Difficult to exploit vulnerability allows unauthenticated attacker with network access via HTTP to gain unauthorized update, insert or delete access to some Helidon data, unauthorized read access to a subset of Helidon data, and cause a partial denial of service (partial DoS); attacks may significantly impact additional products (scope change).
- CVE-2026-101570Low
Vulnerability in Helidon (component helidon-webserver-http2) affecting versions 4.0.0-4.5.5. A difficult-to-exploit attack via HTTP/2 allows an unauthenticated network attacker to cause a partial denial of service.
- CVE-2026-101569Medium
Vulnerability in Oracle Fusion Middleware's Helidon product (component: helidon-common-concurrency-limits) affecting versions 4.0.0-4.5.5 and 27.0.0. An easily exploitable flaw allows an unauthenticated network attacker via HTTP to modify some Helidon data and cause a partial denial of service.
- CVE-2026-87289High
Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webserver-static-content). Affected supported versions are 4.0.0-4.5.4. An unauthenticated attacker with network access via HTTP can cause a hang or frequently repeatable crash (complete DOS) of Helidon.
- CVE-2026-83488Medium
Vulnerability in Helidon (helidon-microprofile-security component) versions 4.0.0-4.5.4. A low-privileged attacker with network access via HTTP can gain unauthorized update/insert/delete and read access to data.
- CVE-2026-83480Medium
Vulnerability in Helidon (WebSocket component) versions 4.0.0-4.5.4. An unauthenticated attacker with network access via HTTP can cause a partial denial of service (partial DoS).
- CVE-2026-83460Medium
Vulnerability in Oracle Fusion Middleware Helidon product (component: LRA) affects versions 4.0.0-4.5.4. An unauthenticated attacker with network access via HTTP can compromise Helidon, leading to unauthorized update, insert, delete, and read access to some Helidon accessible data.
- CVE-2026-83459Medium
Vulnerability in Oracle Fusion Middleware Helidon product (component: helidon-media-multipart) affects versions 3.0.0-3.2.20. An unauthenticated attacker with network access via HTTP can cause a partial denial of service (partial DoS) of Helidon.
- CVE-2026-83458Medium
Vulnerability in Oracle Fusion Middleware Helidon product (component: JSON) affects versions 4.0.0-4.5.4. An unauthenticated attacker with network access via HTTP can cause a partial denial of service (partial DoS) of Helidon.
- CVE-2026-83439High
Vulnerability in Helidon of Oracle Fusion Middleware (component: helidon-security-providers-idcs-mapper). Affects versions 3.0.0-3.2.20 and 4.0.0-4.5.4. A low privileged attacker with network access via HTTP can compromise Helidon, leading to unauthorized access and modification of data. CVSS 8.1.
- CVE-2026-83330High
Vulnerability in Helidon (WebSocket component) of Oracle Fusion Middleware (versions 4.0.0-4.5.4). An unauthenticated attacker with network access via HTTP can easily exploit this flaw to cause a hang or frequent crashes (complete DoS) of Helidon. CVSS 7.5 (Availability impact).
- CVE-2026-83281High
Vulnerability in Oracle Fusion Middleware Helidon product (helidon-webserver component) affects versions 4.0.0-4.5.4. An unauthenticated attacker with network access via TCP can cause a hang or frequently repeatable crash (complete DOS). The vulnerability is easily exploitable.
- CVE-2026-83280High
Vulnerability in Oracle Fusion Middleware Helidon product (helidon-webserver-http2 component) affects versions 4.0.0-4.5.4. An unauthenticated attacker with network access via HTTP/2 can cause a hang or frequently repeatable crash (complete DOS). The vulnerability is easily exploitable.
- CVE-2026-83278Medium
Vulnerability in the Helidon product (component: helidon-integrations-neo4j), affecting versions 3.0.0-3.2.20 and 4.0.0-4.5.4. A difficult-to-exploit vulnerability allows an unauthenticated attacker with access to the physical communication segment to gain unauthorized creation, deletion, or modification access to critical data and unauthorized access to data.
- CVE-2026-83276High
Vulnerability in Oracle Fusion Middleware Helidon product (helidon-webclient-http2 component) affects versions 4.0.0-4.5.4. An unauthenticated attacker with network access via HTTP/2 can cause a hang or frequently repeatable crash (complete DOS). The vulnerability is easily exploitable.
- CVE-2026-83231High
Vulnerability in Oracle Fusion Middleware Helidon (component: helidon-dbclient-mongodb) affecting versions 3.0.0-3.2.20 and 4.0.0-4.5.4. A difficult-to-exploit attack via HTTP can lead to unauthorized data access, data modification, and partial denial of service. CVSS 3.1 Base Score 7.0.
- CVE-2026-73939High
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server) versions 3.0.0-3.2.19. An unauthenticated attacker via HTTP can gain unauthorized access to critical data and the ability to create, delete, or modify it, with potential impact on additional products.
- CVE-2026-73938High
Vulnerability in Oracle Fusion Middleware Helidon product (component: Imperative Web Server) affecting versions 4.0.0-4.4.1. Easily exploitable by unauthenticated attacker with network access via HTTP, allowing unauthorized access to critical data or complete access to all Helidon accessible data. CVSS 7.5 (Confidentiality impact).
- CVE-2026-73937High
Vulnerability in Oracle Fusion Middleware Helidon (Imperative Web Server) versions 4.0.0-4.4.1. An unauthenticated attacker via HTTP/2 can cause a hang or frequently repeatable crash (complete DoS) and unauthorized read access to a subset of Helidon accessible data.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

