NN-2025:16-01
HTML injection in Alerted Nodes Dashboard in Guardian/CMC before 25.6.0
| Advisory ID | NN-2025:16-01 |
|---|---|
| Topic | HTML injection in Alerted Nodes Dashboard in Guardian/CMC before 25.6.0 |
| CWE Impact | CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') |
| Issue date | 2026-03-04 |
| Affects | Guardian, CMC < v25.6.0 |
| CVE Name(s) | CVE-2025-40894 |
| CVSS Details | CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N |
| CVSS Score | 2.1 (CVSS v4.0) 4.4 (CVSS v3.1) |
| CVE Risk Level | Low (CVSS v4.0) Medium (CVSS v3.1) |
| Risk Level for Nozomi customers | Low |
Summary
A Stored HTML Injection vulnerability was discovered in the Alerted Nodes Dashboard functionality due to improper validation on an input parameter.
Impact
A malicious authenticated user with the required privileges could edit a node label to inject HTML tags. If the system is configured to use the Alerted Nodes Dashboard, and alerts are reported for the affected node, then the injected HTML may render in the browser of a victim user interacting with it, 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.
Affected Products
Guardian, CMC < v25.6.0
Workarounds and Mitigations
N/A
Solutions
Upgrade to v25.6.0 or later.
Modification History
Related Links
Acknowledgements
We thank the following parties for their efforts:
- Stefano Libero of Nozomi Networks Product Security team for finding this issue during an internal investigation
Contact
Nozomi Networks Product Security team can be reached at prodsec@nozominetworks.com.More contact details on the PSIRT page.