CVE-2025-40899
Stored Cross-Site Scripting (XSS) in Assets and Nodes in Guardian/CMC before 26.0.0
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.
INFO
Published Date :
April 15, 2026, 8:18 a.m.
Last Modified :
April 15, 2026, 8:18 a.m.
Remotely Exploit :
Yes !
Source :
Nozomi
Affected Products
The following products are affected by CVE-2025-40899
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | bec8025f-a851-46e5-b3a3-058e6b0aa23c | ||||
| CVSS 4.0 | HIGH | bec8025f-a851-46e5-b3a3-058e6b0aa23c |
Solution
- Validate all custom field input parameters.
- Sanitize output displayed on Assets and Nodes pages.
- Update the application to the latest version.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-40899 vulnerability anywhere in the article.