CVE-2026-101158

HIGHCVSS 8.4/10

Last modified

CVE-2026-101158 is a high-severity vulnerability rated 8.4/10 on the CVSS scale. 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..

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.

Metrics

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
Arista NetworksCloudVision Portal2026.2.0; >= 2026.1.0, <= 2026.1.2; >= 2025.3.0, <= 2025.3.3; >= 1.0.0, < 2025.3.0

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-101158?
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.
How severe is CVE-2026-101158?
CVE-2026-101158 has a CVSS score of 8.4/10 (HIGH severity).
How do I fix CVE-2026-101158?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

Related CVEs from 2026

Are you affected by CVE-2026-101158?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST