SB2026022611 - Stored XSS in Cisco FXOS and UCS Manager

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Main Vulnerability Database SB2026022611

SB2026022611 - Stored XSS in Cisco FXOS and UCS Manager

Published: February 26, 2026

Security Bulletin ID SB2026022611
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Stored cross-site scripting (CVE-ID: CVE-2026-20091)

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

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear


The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the web-based management interface. A remote user with Administrator or AAA Administrator role can permanenlty inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.


Remediation

Install update from vendor's website.

References