CVE-2025-66501: A stored cross-site scripting (XSS) vulnerability exists in pdfonline.foxit.com within the Predefined Text feature of the Foxit eSign section. A crafted…

PriorityP426medium5.4CVSS 3.1

AVNACLPRLUIRSCCLILAN

EPSS

0.15%

4.6th percentile

A stored cross-site scripting (XSS) vulnerability exists in pdfonline.foxit.com within the Predefined Text feature of the Foxit eSign section. A crafted payload can be stored via the Identity “First Name” field, which is later rendered into the DOM without proper sanitization. As a result, the injected script may execute when predefined text is used or when viewing document properties.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
foxit	pdf_editor_cloud	< 2025-12-01	2025-12-01
foxit_software_inc	pdfonline.foxit.com	—	—

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