CVE-2025-40903
HTML injection in Schedule Restore Archive in Guardian/CMC before 26.1.0
- State
- Published
- Severity
- 4.8 Medium
- Published
- May 19, 2026
- Updated
- Aug 11, 2026
- Reserved
- Apr 16, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L | Nozomi |
| 3.1 | 5.9 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L | Nozomi |
Weaknesses
- CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')
Affected Products
| Product | Versions |
|---|---|
GuardianNozomi Networks |
|
CMCNozomi Networks |
|
References
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