CVE-2026-101157

critical

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.

References

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

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-93961

Details

Source: Mitre, NVD

Published: 2026-10-06

Updated: 2026-10-07

Risk Information

CVSS v2

Base Score: 8

Vector: CVSS2#AV:A/AC:L/Au:N/C:C/I:C/A:P

Severity: High

CVSS v3

Base Score: 8.7

Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L

Severity: High

CVSS v4

Base Score: 9.3

Vector: 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

Severity: Critical

EPSS

EPSS: 0.00218