CVE-2025-40890: Stored Cross-Site Scripting (XSS) in Dashboards in Guardian/CMC before 25.4.0
A Stored Cross-Site Scripting vulnerability was discovered in the Dashboards functionality due to improper validation of an input parameter.
An authenticated low-privilege user can craft a malicious dashboard containing a JavaScript payload and share it with victim users, or a victim can be socially engineered to import a malicious dashboard template. When the victim views or imports the dashboard, 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.
Affected Software
Remediation
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Event History
Frequently Asked Questions
What is the severity of CVE-2025-40890?
CVE-2025-40890 is classified as a high severity vulnerability due to its potential to allow unauthorized JavaScript execution.
How do I fix CVE-2025-40890?
To fix CVE-2025-40890, ensure that proper input validation and sanitization are in place for the dashboard input parameters.
Who is affected by CVE-2025-40890?
CVE-2025-40890 affects users of Guardian CMC versions up to 25.4.0, particularly involving low-privilege authenticated users.
What kind of attack can be executed using CVE-2025-40890?
CVE-2025-40890 can allow an attacker to execute a Stored Cross-Site Scripting (XSS) attack by sharing a malicious dashboard.
Is an update available for CVE-2025-40890?
Yes, updating to a version of Guardian CMC beyond 25.4.0 is necessary to mitigate the effects of CVE-2025-40890.