{"api_version":"1","generated_at":"2026-10-21T14:30:20+00:00","cve":"CVE-2026-91487","urls":{"html":"https://cve.report/CVE-2026-91487","api":"https://cve.report/api/cve/CVE-2026-91487.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-91487","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-91487"},"summary":{"title":"CVE-2026-91487","description":"Vulnerability in Oracle Java SE (component: Compiler).  Supported versions that are affected are Oracle Java SE: 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; Oracle GraalVM for JDK: 17.0.20.1 and  21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE.  Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of Oracle Java SE accessible data as well as  unauthorized read access to a subset of Oracle Java SE accessible data. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 4.8 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N).","state":"PUBLISHED","assigner":"oracle","published_at":"2026-10-20 22:20:53","updated_at":"2026-10-20 22:20:53"},"problem_types":["Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE.  Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of Oracle Java SE accessible data as well as  unauthorized read access to a subset of Oracle Java SE accessible data."],"metrics":[{"version":"3.1","source":"secalert_us@oracle.com","type":"Primary","score":"4.8","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","baseScore":4.8,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"}},{"version":"3.1","source":"CNA","type":"DECLARED","score":"4.8","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","data":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.8,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"}}],"references":[{"url":"https://www.oracle.com/security-alerts/cpuoct2026.html","name":"https://www.oracle.com/security-alerts/cpuoct2026.html","refsource":"secalert_us@oracle.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-91487","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91487","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Oracle Corporation","product":"Oracle Java SE","version":"affected 8u503-perf","platforms":[]},{"source":"CNA","vendor":"Oracle Corporation","product":"Oracle Java SE","version":"affected 11.0.32.1","platforms":[]},{"source":"CNA","vendor":"Oracle Corporation","product":"Oracle Java SE","version":"affected 17.0.20.1","platforms":[]},{"source":"CNA","vendor":"Oracle Corporation","product":"Oracle Java SE","version":"affected 21.0.12.1","platforms":[]},{"source":"CNA","vendor":"Oracle Corporation","product":"Oracle Java SE","version":"affected 25.0.4.1","platforms":[]},{"source":"CNA","vendor":"Oracle Corporation","product":"Oracle Java SE","version":"affected 27","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"product":"Oracle Java SE","vendor":"Oracle Corporation","versions":[{"status":"affected","version":"8u503-perf"},{"status":"affected","version":"11.0.32.1"},{"status":"affected","version":"17.0.20.1"},{"status":"affected","version":"21.0.12.1"},{"status":"affected","version":"25.0.4.1"},{"status":"affected","version":"27"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:oracle:java_se:8u503:*:*:*:enterprise_performance:*:*:*","vulnerable":true},{"criteria":"cpe:2.3:a:oracle:java_se:11.0.32.1:*:*:*:*:*:*:*","vulnerable":true},{"criteria":"cpe:2.3:a:oracle:java_se:17.0.20.1:*:*:*:*:*:*:*","vulnerable":true},{"criteria":"cpe:2.3:a:oracle:java_se:21.0.12.1:*:*:*:*:*:*:*","vulnerable":true},{"criteria":"cpe:2.3:a:oracle:java_se:25.0.4.1:*:*:*:*:*:*:*","vulnerable":true},{"criteria":"cpe:2.3:a:oracle:java_se:27:*:*:*:*:*:*:*","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en-US","value":"Vulnerability in Oracle Java SE (component: Compiler).  Supported versions that are affected are Oracle Java SE: 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; Oracle GraalVM for JDK: 17.0.20.1 and  21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE.  Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of Oracle Java SE accessible data as well as  unauthorized read access to a subset of Oracle Java SE accessible data. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 4.8 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)."}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.8,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"description":"Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE.  Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of Oracle Java SE accessible data as well as  unauthorized read access to a subset of Oracle Java SE accessible data.","lang":"en-US"}]}],"providerMetadata":{"dateUpdated":"2026-10-20T21:26:13.608Z","orgId":"43595867-4340-4103-b7a2-9a5208d29a85","shortName":"oracle"},"references":[{"name":"Oracle Advisory","tags":["vendor-advisory"],"url":"https://www.oracle.com/security-alerts/cpuoct2026.html"}]}},"cveMetadata":{"assignerOrgId":"43595867-4340-4103-b7a2-9a5208d29a85","assignerShortName":"oracle","cveId":"CVE-2026-91487","datePublished":"2026-10-20T21:26:13.608Z","dateReserved":"2026-09-14T22:10:16.638Z","dateUpdated":"2026-10-20T21:26:13.608Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-20 22:20:53","lastModifiedDate":"2026-10-20 22:20:53","problem_types":["Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE.  Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of Oracle Java SE accessible data as well as  unauthorized read access to a subset of Oracle Java SE accessible data."],"metrics":{"cvssMetricV31":[{"source":"secalert_us@oracle.com","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","baseScore":4.8,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.2,"impactScore":2.5}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"91487","Ordinal":"1","Title":"CVE-2026-91487","CVE":"CVE-2026-91487","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"91487","Ordinal":"1","NoteData":"Vulnerability in Oracle Java SE (component: Compiler).  Supported versions that are affected are Oracle Java SE: 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1, 27; Oracle GraalVM for JDK: 17.0.20.1 and  21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Difficult to exploit vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Oracle Java SE.  Successful attacks of this vulnerability can result in  unauthorized update, insert or delete access to some of Oracle Java SE accessible data as well as  unauthorized read access to a subset of Oracle Java SE accessible data. Note: This vulnerability can only be exploited by supplying data to APIs in the specified Component without using Untrusted Java Web Start applications or Untrusted Java applets, such as through a web service. CVSS 3.1 Base Score 4.8 (Confidentiality and Integrity impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N).","Type":"Description","Title":"CVE-2026-91487"}]}}}