{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-91451", "tracking": { "current_release_date": "2026-10-22T12:33:26.080422Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-91451", "initial_release_date": "2026-10-20T22:58:34.007249Z", "revision_history": [ { "date": "2026-10-20T22:58:34.007249Z", "number": "1", "summary": "CVSS created.| Products created (11).| References created (1).| Description created for source.| Unknown change.| Product Identifiers created (6)." }, { "date": "2026-10-20T22:58:36.144995Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-10-20T23:26:09.650054Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1)." }, { "date": "2026-10-20T23:26:18.240807Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-10-21T00:35:10.948425Z", "number": "5", "summary": "Source connected.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (9).| Product Remediations created (9).| References created (2)." }, { "date": "2026-10-21T00:35:18.715037Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-10-21T16:16:16.556767Z", "number": "7", "summary": "EPSS created.| Unknown change." }, { "date": "2026-10-21T16:17:18.617949Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-10-21T16:23:29.743906Z", "number": "9", "summary": "Source connected.| CVE status created. (valid)| Products connected (14).| References created (3)." }, { "date": "2026-10-21T16:23:42.578416Z", "number": "10", "summary": "NCSC Score updated." }, { "date": "2026-10-22T00:47:36.848637Z", "number": "11", "summary": "Source created.| CVE status created. (valid)| Description created for source.| Products connected (1)." }, { "date": "2026-10-22T00:47:38.244551Z", "number": "12", "summary": "NCSC Score updated." }, { "date": "2026-10-22T12:05:51.358113Z", "number": "13", "summary": "Source connected.| CVE status created. (valid)" }, { "date": "2026-10-22T12:06:01.263403Z", "number": "14", "summary": "NCSC Score updated." }, { "date": "2026-10-22T12:33:10.859330Z", "number": "15", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (44).| Product Identifiers created (11).| References created (3).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-10-22T12:33:19.299584Z", "number": "16", "summary": "NCSC Score updated." } ], "status": "interim", "version": "16" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/17.0.20.1", "product": { "name": "vers:unknown/17.0.20.1", "product_id": "CSAFPID-9794298", "product_identification_helper": { "cpe": "cpe:/a:oracle:graalvm:17.0.20.1" } } }, { "category": "product_version_range", "name": "vers:unknown/21.0.12.1", "product": { "name": "vers:unknown/21.0.12.1", "product_id": "CSAFPID-9794302", "product_identification_helper": { "cpe": "cpe:/a:oracle:graalvm:21.0.12.1" } } }, { "category": "product_version_range", "name": "vers:unknown/21.3.19.1.1", "product": { "name": "vers:unknown/21.3.19.1.1", 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"java-21-openjdk-windows" } ], "category": "product_family", "name": "Red Hat build of OpenJDK 21" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-5226036" } } ], "category": "product_name", "name": "java-25-openjdk-portable" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-5454755" } } ], "category": "product_name", "name": "java-25-openjdk-windows" } ], "category": "product_family", "name": "Red Hat build of OpenJDK 25" } ], "category": "vendor", "name": "Red Hat" }, { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-2728723" } } ], "category": "product_name", "name": "openjdk-17" } ], "category": "product_family", "name": "bookworm" } ], "category": "vendor", "name": "Debian" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-91451", "cwe": { "id": "CWE-444", "name": "Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')" }, "notes": [ { "category": "description", "text": "Vulnerability in Oracle Java SE (component: Networking). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Easily exploitable 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. 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 5.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-91451" }, { "category": "description", "text": "Vulnerability in Oracle Java SE (component: Networking). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Easily exploitable 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. 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 5.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-91451" }, { "category": "description", "text": "Vulnerability in Oracle Java SE (component: Networking). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Easily exploitable 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. 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 5.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).", "title": "oracle - https://www.oracle.com/a/tech/docs/security-alerts/cpuoct2026csaf.json" }, { "category": "description", "text": "Vulnerability in Oracle Java SE (component: Networking). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Easily exploitable 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. 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 5.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-91451" }, { "category": "description", "text": "Vulnerability in Oracle Java SE (component: Networking). Supported versions that are affected are Oracle Java SE: 8u503, 8u503-perf, 11.0.32.1, 17.0.20.1, 21.0.12.1, 25.0.4.1; Oracle GraalVM for JDK: 17.0.20.1 and 21.0.12.1; Oracle GraalVM Enterprise Edition: 21.3.19.1.1. Easily exploitable 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. 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 5.3 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N).\nA flaw was found in the Networking component of OpenJDK. This vulnerability allows an unauthenticated remote attacker to cause unauthorized data modification by sending crafted input to exposed Application Programming Interfaces (APIs), such as through web services. Successful exploitation enables an attacker to insert, update, or delete data accessible to the application.", "title": "redhat - https://access.redhat.com/security/cve/CVE-2026-91451" }, { "category": "other", "text": "0.00297", "title": "EPSS" }, { "category": "other", "text": "5.7", "title": "NCSC Score" }, { "category": "other", "text": "VENDOR FIX as product remediation category, There is product data available from source Oracle, Is related to (a version of) an uncommon product, There is product data available from source Certbundde", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "There is cvss data available from source Redhat", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 2\n", "title": "Vendor assessment" } ], "product_status": { "known_affected": [ "CSAFPID-9758397", "CSAFPID-9758398", "CSAFPID-9758399", "CSAFPID-9758400", "CSAFPID-9758402", "CSAFPID-9758403", "CSAFPID-9758407", "CSAFPID-9758408", "CSAFPID-9758409", "CSAFPID-9758410", "CSAFPID-9758412", "CSAFPID-9763636", "CSAFPID-9763688", "CSAFPID-9763689", "CSAFPID-9763691", "CSAFPID-9763692", "CSAFPID-9763693", "CSAFPID-9763694", "CSAFPID-9763695", "CSAFPID-9763696", "CSAFPID-9010894", "CSAFPID-9794294", "CSAFPID-9794295", "CSAFPID-9794296", "CSAFPID-9794297", "CSAFPID-9794298", "CSAFPID-9794299", "CSAFPID-9794300", "CSAFPID-9794301", "CSAFPID-9794302", "CSAFPID-9794303", "CSAFPID-9794304", "CSAFPID-9794305", "CSAFPID-9794306", "CSAFPID-2728723", "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-1712389", "CSAFPID-1712390", "CSAFPID-1712391", "CSAFPID-1712396", "CSAFPID-1712397", "CSAFPID-1712400", "CSAFPID-1712401", "CSAFPID-1851434", "CSAFPID-1851439", "CSAFPID-1851440", "CSAFPID-1851441", "CSAFPID-1851443", "CSAFPID-1851444", "CSAFPID-1851445", "CSAFPID-1851447", "CSAFPID-1851448", "CSAFPID-1851450", "CSAFPID-2695636", "CSAFPID-2728507", "CSAFPID-2728508", "CSAFPID-2728509", "CSAFPID-2728510", "CSAFPID-2858634", "CSAFPID-2979983", "CSAFPID-2979984", "CSAFPID-2979985", "CSAFPID-2979986", "CSAFPID-5129934", "CSAFPID-5129935", "CSAFPID-5129947", "CSAFPID-5226034", "CSAFPID-5226036", "CSAFPID-5349370", "CSAFPID-5454755", "CSAFPID-6014972", "CSAFPID-6214014", "CSAFPID-6214015", "CSAFPID-6214017", "CSAFPID-6214018", "CSAFPID-9813109" ] }, "references": [ { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-91451" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://vulnerabilities.ncsc.nl/manual/CVE-2026-91451" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91451" }, { "category": "external", "summary": "Source - oracle", "url": "https://www.oracle.com/a/tech/docs/security-alerts/cpuoct2026csaf.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-4079.json" }, { "category": "external", "summary": "Source - debian", "url": "https://security-tracker.debian.org/tracker/CVE-2026-91451" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://advisories.ncsc.nl/advisory?id=NCSC-2026-0449" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/security/cve/CVE-2026-91451" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-91451" }, { "category": "external", "summary": "Reference - redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91451" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; oracle; redhat", "url": "https://www.oracle.com/security-alerts/cpuoct2026.html" }, { "category": "external", "summary": "Reference - oracle", "url": "https://www.oracle.com/docs/tech/security-alerts/cpuoct2026csaf.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-4079.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-4079" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://www.oracle.com/security-alerts/cpuoct2026.html#AppendixJAVA" } ], "remediations": [ { "category": "vendor_fix", "details": "Oracle customers with valid support contracts", "product_ids": [ "CSAFPID-9763636", "CSAFPID-9763688", "CSAFPID-9763689", "CSAFPID-9763691", "CSAFPID-9763692", "CSAFPID-9763693", "CSAFPID-9763694", "CSAFPID-9763695", "CSAFPID-9763696" ], "url": "https://support.oracle.com/support/?documentId=CPU388" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-1712389", "CSAFPID-1712390", "CSAFPID-1712391", "CSAFPID-1712396", "CSAFPID-1712397", "CSAFPID-1712400", "CSAFPID-1712401", "CSAFPID-1851434", "CSAFPID-1851439", "CSAFPID-1851440", "CSAFPID-1851441", "CSAFPID-1851443", "CSAFPID-1851444", "CSAFPID-1851445", "CSAFPID-1851447", "CSAFPID-1851448", "CSAFPID-1851450", "CSAFPID-2695636", "CSAFPID-2728507", "CSAFPID-2728508", "CSAFPID-2728509", "CSAFPID-2728510", "CSAFPID-2728723", "CSAFPID-2858634", "CSAFPID-2979983", "CSAFPID-2979984", "CSAFPID-2979985", "CSAFPID-2979986", "CSAFPID-5129934", "CSAFPID-5129935", "CSAFPID-5129947", "CSAFPID-5226034", "CSAFPID-5226036", "CSAFPID-5349370", "CSAFPID-5454755", "CSAFPID-6014972", "CSAFPID-6214014", "CSAFPID-6214015", "CSAFPID-6214017", "CSAFPID-6214018", "CSAFPID-9010894", "CSAFPID-9758397", "CSAFPID-9758398", "CSAFPID-9758399", "CSAFPID-9758400", "CSAFPID-9758402", "CSAFPID-9758403", "CSAFPID-9758407", "CSAFPID-9758408", "CSAFPID-9758409", "CSAFPID-9758410", "CSAFPID-9758412", "CSAFPID-9763636", "CSAFPID-9763688", "CSAFPID-9763689", "CSAFPID-9763691", "CSAFPID-9763692", "CSAFPID-9763693", "CSAFPID-9763694", "CSAFPID-9763695", "CSAFPID-9763696", "CSAFPID-9794294", "CSAFPID-9794295", "CSAFPID-9794296", "CSAFPID-9794297", "CSAFPID-9794298", "CSAFPID-9794299", "CSAFPID-9794300", "CSAFPID-9794301", "CSAFPID-9794302", "CSAFPID-9794303", "CSAFPID-9794304", "CSAFPID-9794305", "CSAFPID-9794306", "CSAFPID-9813109" ] } ], "title": "CVE-2026-91451" } ] }