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CVE-2026-101158— Security Advisory 0185

Quick assessment

Affected
Arista Networks CloudVision Portal
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Fileserver 上传 API 中存在一个输入验证缺失的漏洞，允许拥有文件上传权限的经身份验证的攻击者执行存储型跨站脚本攻击（Stored XSS）。成功利用该漏洞可使攻击者劫持其他 CloudVision 用户的 Web 会话，从而可能获得对其账户及管理员权限的完全访问权。

CVSS 8.4 · High

Affected Version Matrix 4

VendorProduct Version RangeStatus
Arista Networks CloudVision Portal 2026.2.0 affected
2026.1.0≤ 2026.1.2 affected
2025.3.0≤ 2025.3.3 affected
1.0.0< 2025.3.0 affected
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I. Basic Information for CVE-2026-101158

Vulnerability Information
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Vulnerability Title
Security Advisory 0185
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Arista Networks CloudVision Portal 2026.2.0 -

II. Public POCs for CVE-2026-101158

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III. Intelligence Information for CVE-2026-101158

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Other References for CVE-2026-101158 (1)

Same Patch Batch · Arista Networks · 2026-10-06 · 24 CVEs total

CVE-2026-102159 9.8 CRITICAL Security Advisory 0190
CVE-2026-101155 9.1 CRITICAL Security Advisory 0189
CVE-2026-102161 8.8 HIGH Security Advisory 0190
CVE-2026-102162 8.8 HIGH Security Advisory 0193
CVE-2026-102163 8.8 HIGH Security Advisory 0195
CVE-2026-101157 8.7 HIGH Security Advisory 0192
CVE-2026-102155 8.5 HIGH Security Advisory 0190
CVE-2026-101156 8.4 HIGH Security Advisory 0192
CVE-2026-101152 8.0 HIGH Security Advisory 0187
CVE-2026-101153 8.0 HIGH Security Advisory 0188
CVE-2026-102167 7.5 HIGH Security Advisory 0197
CVE-2026-102165 7.5 HIGH Security Advisory 0198
CVE-2026-101154 7.2 HIGH Security Advisory 0189
CVE-2026-102160 7.2 HIGH Security Advisory 0190
CVE-2026-102156 6.8 MEDIUM Security Advisory 0191
CVE-2026-102168 6.5 MEDIUM Security Advisory 0194
CVE-2026-102158 6.5 MEDIUM Security Advisory 0190
CVE-2026-102169 6.5 MEDIUM Security Advisory 0194
CVE-2026-102157 5.9 MEDIUM Security Advisory 0190
CVE-2026-101151 4.3 MEDIUM Security Advisory 0187

Showing top 20 of 24 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: CloudVision Portal
Same vendor: Arista Networks
Same weakness: CWE-79

V. Comments for CVE-2026-101158

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