Stored cross-site scripting in Cisco UCS Manager - CVE-2026-20091
Published: February 26, 2026
Vulnerability identifier: #VU123284
CSH Severity: Low
CVSS v4.0: 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
CVE-ID: CVE-2026-20091
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco UCS Manager
Cisco UCS Manager
Detailed vulnerability description
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.
How to mitigate CVE-2026-20091
Install updates from vendor's website.