{ "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-2026-101158", "tracking": { "current_release_date": "2026-10-08T19:09:20.044299Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-101158", "initial_release_date": "2026-10-06T20:40:33.236097Z", "revision_history": [ { "date": "2026-10-06T20:40:33.236097Z", "number": "1", "summary": "CVSS created.| CWES created (1).| Unknown change.| Products created (4).| References created (1).| Description created for source.| Unknown change." }, { "date": "2026-10-06T20:40:37.053133Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-10-06T20:41:13.604556Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (1).| CWES updated (1)." }, { "date": "2026-10-06T20:41:16.094733Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-10-07T00:04:02.649776Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CWES updated (1)." }, { "date": "2026-10-07T00:04:07.366859Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| Product Remediations created (5).| Products connected (4).| References created (2)." }, { "date": "2026-10-07T00:04:11.711029Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-10-08T19:05:41.596320Z", "number": "8", "summary": "EPSS created.| Unknown change." }, { "date": "2026-10-08T19:09:07.488745Z", "number": "9", "summary": "NCSC Score updated." } ], "status": "interim", "version": "9" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:arista/cloudvision portal version 1.0.0", "product": { "name": "vers:arista/cloudvision portal version 1.0.0", "product_id": "CSAFPID-9531067" } }, { "category": "product_version_range", "name": "vers:arista/cloudvision portal version 2025.3.4", "product": { "name": "vers:arista/cloudvision portal version 2025.3.4", "product_id": "CSAFPID-9531064" } }, { "category": "product_version_range", "name": "vers:arista/cloudvision portal version 2026.1.3", "product": { "name": "vers:arista/cloudvision portal version 2026.1.3", "product_id": "CSAFPID-9531062" } }, { "category": "product_version_range", "name": "vers:arista/cloudvision portal version 2026.2.1", "product": { "name": "vers:arista/cloudvision portal version 2026.2.1", "product_id": "CSAFPID-9531059" } }, { "category": "product_version_range", "name": "vers:arista/cloudvision portal version 2026.3.0", "product": { "name": "vers:arista/cloudvision portal version 2026.3.0", "product_id": "CSAFPID-9531061" } } ], "category": "product_name", "name": "CloudVision Portal" } ], "category": "product_family", "name": "Software Products" }, { "branches": [ { "category": "product_version_range", "name": "vers:unknown/1.0.0|<2025.3.0", "product": { "name": "vers:unknown/1.0.0|<2025.3.0", "product_id": "CSAFPID-9530514" } }, { "category": "product_version_range", "name": "vers:unknown/2025.3.0|<=2025.3.3", "product": { "name": "vers:unknown/2025.3.0|<=2025.3.3", "product_id": "CSAFPID-9530454" } }, { "category": "product_version_range", "name": "vers:unknown/2026.1.0|<=2026.1.2", "product": { "name": "vers:unknown/2026.1.0|<=2026.1.2", "product_id": "CSAFPID-9530455" } }, { "category": "product_version_range", "name": "vers:unknown/2026.2.0", "product": { "name": "vers:unknown/2026.2.0", "product_id": "CSAFPID-9530456" } } ], "category": "product_name", "name": "CloudVision Portal" } ], "category": "vendor", "name": "Arista Networks" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-101158", "cwe": { "id": "CWE-79", "name": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')" }, "notes": [ { "category": "description", "text": "The vulnerability affects both CloudVision Portal (on-premises) and CloudVision-CUE (on-premises). CV-CUE is Arista’s Wi-Fi management service and, in on-premises deployments, is hosted as a service on the CloudVision Portal on-premises platform. Because the affected component is used by both product deployments, customers running either CVP or CV-CUE should review the affected versions to assess their impact.\n\nA missing input validation vulnerability in the Fileserver upload API allows an authenticated attacker with file upload privileges to execute stored cross-site scripting (XSS). Successful exploitation could enable the attacker to hijack another CloudVision user's web session, potentially granting full access to their account and administrative permissions.\nNo specific configuration is required to be vulnerable to this issue. This vulnerability is present in the default configuration of affected releases.", "title": "arista - https://www.arista.com/assets/data/SecurityAdvisories/CSAF/arista_networks_security_advisory_185_CSAF.json" }, { "category": "description", "text": "A missing input validation vulnerability in the Fileserver upload API allows an authenticated attacker with file upload privileges to execute stored cross-site scripting (XSS). Successful exploitation could enable the attacker to hijack another CloudVision user's web session, potentially granting full access to their account and administrative permissions.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-101158" }, { "category": "description", "text": "A missing input validation vulnerability in the Fileserver upload API allows an authenticated attacker with file upload privileges to execute stored cross-site scripting (XSS). Successful exploitation could enable the attacker to hijack another CloudVision user's web session, potentially granting full access to their account and administrative permissions.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-101158" }, { "category": "description", "text": "No indicators of compromise exist.", "title": "arista - https://www.arista.com/en/support/advisories-notices/security-advisory/24801-security-advisory-0185" }, { "category": "other", "text": "0.00283", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H", "title": "CVSSV4" }, { "category": "other", "text": "9.3", "title": "CVSSV4 base score" }, { "category": "other", "text": "4.9", "title": "NCSC Score" }, { "category": "other", "text": "VENDOR FIX as product remediation category, Is related to an uncommon cwe source, Is related to an uncommon product source", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to (a version of) an uncommon product, The CVSS vector string contains A:H (Availability Impact: High), The CVSS vector string contains AV:N (Attack Vector: Network), Is related to CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')), There is cwe data available from source Nvd", "title": "NCSC Score top decreasing factors" } ], "product_status": { "first_affected": [ "CSAFPID-9531067" ], "fixed": [ "CSAFPID-9531059", "CSAFPID-9531061", "CSAFPID-9531062", "CSAFPID-9531064" ], "known_affected": [ "CSAFPID-9530514", "CSAFPID-9530454", "CSAFPID-9530455", "CSAFPID-9530456" ] }, "references": [ { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-101158" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-101158" }, { "category": "external", "summary": "Source - ncscclear", "url": "https://vulnerabilities.ncsc.nl/manual/CVE-2026-101158" }, { "category": "external", "summary": "Source - arista", "url": "https://www.arista.com/en/support/advisories-notices/security-advisory/24801-security-advisory-0185" }, { "category": "external", "summary": "Source - arista", "url": "https://www.arista.com/assets/data/SecurityAdvisories/CSAF/arista_networks_security_advisory_185_CSAF.json" }, { "category": "external", "summary": "Reference - arista; cveprojectv5; nvd", "url": "https://www.arista.com/en/support/advisories-notices/security-advisory/24801-security-advisory-0185" }, { "category": "external", "summary": "Reference - arista", "url": "https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-101158" } ], "remediations": [ { "category": "vendor_fix", "details": "Fixed in CloudVision Portal version 2026.2.1", "product_ids": [ "CSAFPID-9531059" ] }, { "category": "vendor_fix", "details": "Fixed in CloudVision Portal version 2026.3.0", "product_ids": [ "CSAFPID-9531061" ] }, { "category": "vendor_fix", "details": "Fixed in CloudVision Portal version 2026.1.3", "product_ids": [ "CSAFPID-9531062" ] }, { "category": "vendor_fix", "details": "Fixed in CloudVision Portal version 2025.3.4", "product_ids": [ "CSAFPID-9531064" ] }, { "category": "none_available", "details": "Not fixed in CloudVision Portal version 1.0.0", "product_ids": [ "CSAFPID-9531067" ] } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H", "baseScore": 8.4, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-9530454", "CSAFPID-9530455", "CSAFPID-9530456", "CSAFPID-9530514", "CSAFPID-9531067" ] } ], "title": "CVE-2026-101158" } ] }