HTML injection in Users in Guardian/CMC before 26.1.0
Vulnerability Description
A Stored HTML Injection vulnerability was discovered in the Users functionality due to improper validation of an input parameter. An authenticated user with administrative privileges can create a malicious user whose username contains HTML tags. When a victim attempts to delete a group containing the affected user, the injected HTML renders in their browser, enabling phishing and possibly open redirect attacks. Full XSS exploitation and direct information disclosure are prevented by the existing input validation and Content Security Policy configuration.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-40902
Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- This issue was found by Stefano Libero and Andrea Palanca of Nozomi Networks Product Security team during an internal investigation.
More from Nozomi Networks
View All →Affected Vendor
Nozomi Networks
View all reports →