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OpenAdvisories
Medium · 6.1 CVE-2025-40893 EUVD-2025-204259GHSA-wg8q-pmvg-p6gw

HTML injection in Asset List in Guardian/CMC before 25.5.0

Published Dec 18, 2025 · Updated Aug 11, 2026 · Assigned by Nozomi

Description

A Stored HTML Injection vulnerability was discovered in the Asset List functionality due to improper validation of network traffic data. An unauthenticated attacker can send specially crafted network packets to inject HTML tags into asset attributes. When a victim views the affected assets in the Asset List (and similar functions), 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.

Affected products

VendorProductAffectedFixed
Nozomi Networks Guardian < 25.5.0 25.5.0
Nozomi Networks CMC < 25.5.0 25.5.0

Advisories 3

References