{"affected":[{"affectedData":[{"product":"Helidon","vendor":"Oracle Corporation","versions":[{"lessThanOrEqual":"4.5.4","status":"affected","version":"4.0.0","versionType":"custom"}]}],"source":"secalert_us@oracle.com"}],"cveTags":[],"descriptions":[{"lang":"en","value":"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 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)."}],"id":"CVE-2026-83458","lastModified":"2026-09-18T17:17:04.380","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"exploitabilityScore":3.9,"impactScore":1.4,"source":"secalert_us@oracle.com","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2026-83458","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-09-18T16:12:46.483182Z","version":"2.0.3"}}]},"published":"2026-09-15T20:18:54.600","references":[{"source":"secalert_us@oracle.com","url":"https://www.oracle.com/security-alerts/cspusep2026.html"}],"sourceIdentifier":"secalert_us@oracle.com","vulnStatus":"Awaiting Analysis","weaknesses":[{"description":[{"lang":"en","value":"CWE-400"}],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary"}]}