CVE-2025-40901
HTML injection in Credentials Manager in Guardian/CMC before 26.1.0
CVSS Score
5.9
EPSS Score
0.0%
EPSS Percentile
0th
A Stored HTML Injection vulnerability was discovered in the Credentials Manager functionality due to improper validation of an input parameter. An authenticated user with administrative privileges can define a malicious identity containing HTML tags. When a victim attempts to delete the affected identity, 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.
| CWE | CWE-79 |
| Vendor | nozomi networks |
| Product | guardian |
| Published | May 19, 2026 |
| Last Updated | May 19, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low
Affected Versions
Nozomi Networks / Guardian
0 < 26.1.0
Nozomi Networks / CMC
0 < 26.1.0
References
Credits
This issue was found by Stefano Libero and Andrea Palanca of Nozomi Networks Product Security team during an internal investigation.