{"id":"CVE-2026-91323","published":"2026-10-20T22:20:34Z","modified":"2026-10-27T04:18:00Z","title":"Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core)","vendor":"Oracle Corporation","product":"Oracle WebLogic Server","tier":"core","eol":null,"description":{"text":"Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core).  Supported versions that are affected are 12.2.1.4.0, 14.1.1.0.0, 14.1.2.0.0 and  15.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebLogic Server.  Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).","provenance":"source","from":"NVD"},"summary":{"text":"A flaw in the Core component of Oracle WebLogic Server, part of Oracle Fusion Middleware, affects the product's supported versions. An unauthenticated attacker with network access over HTTP, requiring no user interaction and no special configuration, can easily exploit it to take over the server.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-23T07:18:31Z"},"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.00496,"percentile":0.42575,"date":"2026-10-30","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":{"pulseCount":6,"pulses":[{"name":"Known_Cve | Oct 29, 2026 | Part 1/3","url":"https://otx.alienvault.com/pulse/6ae20c23cd267c7cddd4e545","created":"2026-10-28"},{"name":"Known_Cve | Oct 28, 2026 | Part 2/3","url":"https://otx.alienvault.com/pulse/6ae0ba8e2d29f6aa1bfe6f11","created":"2026-10-27"},{"name":"Known_Cve | Oct 27, 2026 | Part 2/3","url":"https://otx.alienvault.com/pulse/6adf68c4585d98c8d3af5bea","created":"2026-10-26"},{"name":"Known_Cve | Oct 24, 2026 | Part 2/3","url":"https://otx.alienvault.com/pulse/6adb741adaae4be68dd04fea","created":"2026-10-23"},{"name":"Known_Cve | Oct 23, 2026 | Part 3/3","url":"https://otx.alienvault.com/pulse/6ada23844cb3f14c39a33102","created":"2026-10-22"},{"name":"Known_Cve | Oct 22, 2026 | Part 4/4","url":"https://otx.alienvault.com/pulse/6ad8d3528b43fc2ec5b04a43","created":"2026-10-21"}],"provenance":"machine"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"},{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"references":[{"url":"https://www.oracle.com/security-alerts/cpuoct2026.html","tags":[]}],"techniques":[],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2026-106577","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-106577","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[],"timeline":[{"date":"2026-10-20","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91323","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":17.3,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":8.52,"detail":"percentile 0.4258"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":1.92,"detail":"6 pulses"},{"name":"CVSS severity","points":6.86,"detail":"base score 9.8"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]},"lineage":{"familyId":"fam-class-oracle-weblogic-server-cwe-306"}}