Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webclient-http2). Supported versions that are affected are 4.0.0-4.5.4. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Helidon. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://www.oracle.com/security-alerts/cspusep2026.html |
|
History
Fri, 18 Sep 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Helidon WebClient HTTP/2 Denial of Service Vulnerability |
Wed, 16 Sep 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Helidon WebClient HTTP/2 Denial of Service Vulnerability |
Wed, 16 Sep 2026 00:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-400 | |
| Metrics |
ssvc
|
Tue, 15 Sep 2026 20:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webclient-http2). Supported versions that are affected are 4.0.0-4.5.4. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP/2 to compromise Helidon. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Helidon. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). | |
| First Time appeared |
Oracle
Oracle helidon |
|
| CPEs | cpe:2.3:a:oracle:helidon:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Oracle
Oracle helidon |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: oracle
Published: 2026-09-15T20:04:43.115Z
Updated: 2026-09-15T23:14:53.730Z
Reserved: 2026-08-31T15:40:57.350Z
Link: CVE-2026-83276
Updated: 2026-09-15T23:13:08.388Z
Status : Analyzed
Published: 2026-09-15T20:18:40.000
Modified: 2026-09-28T15:14:38.140
Link: CVE-2026-83276
No data.