Vulnerability details

CVE-2026-101157

Arista Networks CloudVision CUE

Security Advisory 0192

CVSS 4.0

9.3Critical

Official description

A stored cross-site scripting (XSS) vulnerability may allow an unauthenticated attacker with adjacent-network access to inject malicious content that executes when an authenticated user views affected content. Successful exploitation may allow the attacker to compromise the victim's authenticated browser session, access sensitive data, modify system state, or disrupt affected services.

CVSS scores

Score	Version	Source	Vector
9.3Critical	4.0	CVEProject cvelistV5 (CNA) (Arista)	`CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L`
8.7High	3.1	CVEProject cvelistV5 (CNA) (Arista)	`CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L`

Affected products

Vendor	Product	Versions	Source
Arista Networks	CloudVision CUE	2021.2.0 ≤ v ≤ 2026.2.0	CVEProject cvelistV5 (CNA)

References and advisories

https://www.arista.com/en/support/advisories-notices/security-advisory/24808-security-advisory-0192 vendor-advisory

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Details

Published: 2026-10-06
Last updated: 2026-10-06
State: Published
Assigner (CNA): Arista

Exploit prediction (EPSS)

0.21%

Probability of exploitation in 30 days

12.3%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-79
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')