CVE-2025-40899
High
Description
A Stored Cross-Site Scripting vulnerability was discovered in the Assets and Nodes functionality due to improper validation of an input parameter. An authenticated user with custom fields privileges can define a malicious custom field containing a JavaScript payload. When the victim views the Assets or Nodes pages, the XSS executes in their browser context, allowing the attacker to perform unauthorized actions as the victim, such as modify application data, disrupt application availability, and access limited sensitive information.
SeverityHigh
CVSS8.9
Exploit probability—
ProductGuardian
PublishedApr 15, 2026
First seenApr 15, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- Nozomi Networks Guardian26.0.0 or later
- Nozomi Networks CMC26.0.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Nozomi Networks Guardian | v < 26.0.0 | 26.0.0 |
| Nozomi Networks CMC | v < 26.0.0 | 26.0.0 |
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