CVE-2026-1591: Foxit PDF Editor Cloud

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

Foxit PDF Editor Cloud (pdfonline) contains a stored cross-site scripting vulnerability in the file upload feature. A malicious username is embedded into the upload file list without proper escaping, allowing arbitrary JavaScript execution when the list is displayed. This issue affects pdfonline.foxit.com: before 2026‑02‑03.

Affected products

• Foxit PDF Editor Cloud: before 2026-02-03 (fixed in 2026-02-03)

Published 2026-02-03. Last modified 2026-06-17.