{"id":"CVE-2026-101572","title":"Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webclient-http2)","summary":"Vulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webclient-http2).  Supported versions that are affected are 4.0.0-4.5.5 and 27.0.0. Easily exploitable vulnerability allows unauthenticated attacker wit…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","vendor":"Oracle Corporation","product":"Helidon","affected":["Helidon >= 4.0.0 <= 4.5.5","Helidon 27.0.0"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-22T18:42:25.474155Z"},"published":"2026-10-20","updated":"2026-10-22","sourceUpdated":"2026-10-22T18:50:22.783Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-101572","references":[{"url":"https://www.oracle.com/security-alerts/cpuoct2026.html","label":"Oracle Advisory"}],"tags":["cve.org"],"epss":0.0049,"epssPercentile":0.41958,"ingestedAt":"2026-10-20T22:23:33.984Z","slug":"CVE-2026-101572","body":"## Overview\n\nVulnerability in the Helidon product of Oracle Fusion Middleware (component: helidon-webclient-http2).  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/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).\n\n## Affected\n\n- `Helidon >= 4.0.0 <= 4.5.5`\n- `Helidon 27.0.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}