CVE-2025-40894 HTML injection in Alerted Nodes Dashboard in Guardian/CMC before 25.6.0
Authenticated users can inject HTML into node labels, potentially enabling phishing or open redirects in the Alerted Nodes Dashboard.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-40894?
CVE-2025-40894 is a low-severity cross-site scripting vulnerability in Nozomi Networks CMC, published on 4 Mar 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
A Stored HTML Injection vulnerability was discovered in the Alerted Nodes Dashboard functionality due to improper validation on an input parameter.
A malicious authenticated user with the required privileges could edit a node label to inject HTML tags. If the system is configured to use the Alerted Nodes Dashboard, and alerts are reported for the affected node, then the injected HTML may render in the browser of a victim user interacting with it, enabling phishing and possibly open redirect attacks. Full XSS exploitation and direct information disclosure are prevented by the existing input validation and Content Security Policy configuration.
Weakness: CWE-79
Which versions are affected by CVE-2025-40894?
It affects 2 products.
Products include Nozominetworks Cmc, Nozominetworks Guardian.
How do I fix CVE-2025-40894?
No fix has been published for CVE-2025-40894 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-40894 being exploited?
There is no known exploitation of CVE-2025-40894 in the wild and no public exploit code.
Other vulnerabilities in Nozomi Networks CMC
- CVE-2023-29245 SQL Injection on IDS parsing of malformed asset fields in Guardian/CMC >= 22.6.0 before 22.6.3 and 23.1.0
- CVE-2026-31984 DoS through oversized audit log entries in Guardian/CMC before 26.2.0
- CVE-2023-2567 Authenticated SQL Injection on Query functionality in Guardian/CMC before 22.6.3 and 23.1.0
- CVE-2023-22378 Authenticated Blind SQL Injection on sorting in Guardian/CMC before 22.6.2
- CVE-2023-23574 Authenticated Blind SQL Injection on alerts count in Guardian/CMC before 22.6.2
Sources
Also known as GHSA-p2w9-p68c-qpqg.