CVE-2025-66501: Foxit pdfonline.foxit.com Stored Cross-Site Scripting in eSign Predefined Text Feature
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 Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-66501?
CVE-2025-66501 is classified as a high severity vulnerability due to its potential for stored cross-site scripting.
How do I fix CVE-2025-66501?
To fix CVE-2025-66501, ensure that all user inputs are properly sanitized before being rendered into the DOM.
What impact does CVE-2025-66501 have on users?
CVE-2025-66501 may allow attackers to execute arbitrary scripts in users' browsers, leading to data theft or session hijacking.
Is CVE-2025-66501 present in all versions of Foxit eSign?
CVE-2025-66501 specifically affects the Predefined Text feature within the Foxit eSign section; affected versions should be evaluated for this vulnerability.
Who is affected by CVE-2025-66501?
Any user of Foxit eSign utilizing the Predefined Text feature may be vulnerable to CVE-2025-66501.