{"id":"CVE-2026-101587","aliases":["EUVD-2026-105995","GHSA-rp47-x5rv-33x4"],"status":"published","title":"Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webclient...","description":"Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webclient-http1).  Supported versions that are affected are 4.0.0-4.5.5 and 27.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon.  Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 5.3 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00429,"percentile":0.37538,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2026-10-20T21:21:43Z","modified":"2026-10-22T21:32:32Z","products":[{"vendor":"oracle corporation","product":"helidon"}],"references":[{"url":"https://www.oracle.com/security-alerts/cpuoct2026.html","tags":["vendor-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101587"},{"url":"https://github.com/advisories/GHSA-rp47-x5rv-33x4"}],"sources":{"cve":[{"id":"CVE-2026-101587","description":"Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webclient-http1).  Supported versions that are affected are 4.0.0-4.5.5 and 27.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon.  Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 5.3 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).","status":"published","published":"2026-10-20T21:21:43.609Z","modified":"2026-10-22T18:50:24.185Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:20:09.808851Z"}],"euvd":[{"id":"EUVD-2026-105995","description":"Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webclient-http1).  Supported versions that are affected are 4.0.0-4.5.5 and 27.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon.  Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 5.3 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).","status":"published","published":"2026-10-20T21:21:43Z","modified":"2026-10-22T18:50:24Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T16:59:34.378575Z"}],"ghsa":[{"id":"GHSA-rp47-x5rv-33x4","title":"Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webclient...","description":"Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webclient-http1).  Supported versions that are affected are 4.0.0-4.5.5 and 27.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon.  Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 5.3 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).","status":"published","published":"2026-10-21T00:32:15Z","modified":"2026-10-22T21:32:32Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:14:17.600276Z"}],"nvd":[{"id":"CVE-2026-101587","description":"Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webclient-http1).  Supported versions that are affected are 4.0.0-4.5.5 and 27.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Helidon.  Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Helidon. CVSS 3.1 Base Score 5.3 (Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).","status":"published","published":"2026-10-20T22:18:12.15Z","modified":"2026-10-22T19:17:34.507Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:13:01.463896Z"}]}}