CVE-2025-66523mediumCWE-79

CVE-2025-66523: medium-severity vulnerability in Foxit Software Inc. na1.foxitesign.foxit.com

Reflected Cross-Site Scripting (XSS) Vulnerability in na1.foxitesign.foxit.com via Unsanitized URL Parameters

Published

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.1epss 0.2%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Affected products
Foxit Software Inc. · na1.foxitesign.foxit.com
Related CVEs — Foxit Software Inc. na1.foxitesign.foxit.com

In the same product, most dangerous first.

CVE-2026-4947HIGHInsecure Direct Object Reference (IDOR) Leading to Signature Forgery in Foxit eSignEPSS 0.2%