CVE-2025-40899

HIGH

Stored Cross-Site Scripting (XSS) in Assets and Nodes in Guardian/CMC before 26.0.0

Title source: cna
STIX 2.1

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 v3 8.9
EPSS 0.0029
EPSS Percentile 20.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-79
Status published
Products (2)
Nozomi Networks/CMC < 26.0.0
Nozomi Networks/Guardian < 26.0.0
Published Apr 15, 2026
Tracked Since Apr 15, 2026