{"id":"CVE-2026-101158","title":"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)","summary":"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 …","severity":"high","cvss":8.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H","cwe":["CWE-79"],"vendor":"Arista Networks","product":"CloudVision Portal","affected":["cloudvision_portal 2026.2.0","cloudvision_portal >= 2026.1.0 <= 2026.1.2","cloudvision_portal >= 2025.3.0 <= 2025.3.3","cloudvision_portal >= 1.0.0 < 2025.3.0"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T20:17:10.127","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-101158","references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/24801-security-advisory-0185","label":"psirt@arista.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-06T19:51:37.462404Z"},"ingestedAt":"2026-10-06T20:16:42.476Z","slug":"CVE-2026-101158","body":"## Overview\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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":46,"depthScoreParts":{"impact":46.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}