CVE-2025-66523
Medium
Description
URL parameters are directly embedded into JavaScript code or HTML attributes without proper encoding or sanitization. This allows attackers to inject arbitrary scripts when an authenticated user visits a crafted link. This issue affects na1.foxitesign.foxit.com: before 2026‑01‑16.
SeverityMedium
CVSS6.1
Exploit probability—
ProductFoxit Esign
PublishedJan 20, 2026
First seenJan 20, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- foxit esign2026-01-16 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| foxit esign | v < 2026-01-16 | 2026-01-16 |
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