CVE-2025-40903

Medium

Description

A Stored HTML Injection vulnerability was discovered in the Schedule Restore Archive functionality due to improper validation of an input parameter. An authenticated user with administrative privileges can define a malicious restore schedule containing HTML tags. When a victim views the affected schedule, the injected HTML renders in their browser, 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.

SeverityMedium
CVSS5.9
Exploit probability—
ProductNozominetworks Cmc
PublishedMay 19, 2026
First seenMay 19, 2026

How to fix

Update
  • nozominetworks cmc26.1.0 or later
  • nozominetworks guardian26.1.0 or later

Affected products

ProductAffected versionsFixed in
nozominetworks cmcv < 26.1.026.1.0
nozominetworks guardianv < 26.1.026.1.0

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.