Main Vulnerability Database Vulnerabilities #VU121600

Cross-site scripting in Cisco Identity Services Engine (ISE) and ISE Passive Identity Connector (ISE-PIC) - CVE-2026-20047

Published: January 15, 2026

Vulnerability identifier: #VU121600

CSH Severity: Low

CVSS v4: 4.8 [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]

CVE-ID: CVE-2026-20047

CWE-ID: CWE-79

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vulnerability details

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. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Affected software

Cisco Identity Services Engine (ISE)
ISE Passive Identity Connector (ISE-PIC)

How to mitigate CVE-2026-20047

Install updates from vendor's website.

Cisco Identity Services Engine (ISE) - addressed in versions 3.2 P8, 3.3 Patch 8, 3.4 Patch 4
ISE Passive Identity Connector (ISE-PIC) - addressed in versions 3.2 Patch 8, 3.3 Patch 8, 3.4 Patch 4

External References

Related Security Bulletins