CVE-2025-40899
Stored Cross-Site Scripting (XSS) in Assets and Nodes in Guardian/CMC before 26.0.0
- State
- Published
- Severity
- 7.1 High
- Published
- Apr 15, 2026
- Updated
- Aug 11, 2026
- Reserved
- Apr 16, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:H/VA:H/SC:L/SI:L/SA:L | Nozomi |
| 3.1 | 8.9 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:H | Nozomi |
Weaknesses
- CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')
Affected Products
| Product | Versions |
|---|---|
GuardianNozomi Networks |
|
CMCNozomi Networks |
|
References
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