CVE-2026-1591

Stored XSS via Attachments Feature in https://pdfonline.foxit.com/

State: Published
Severity: 6.3 Medium
Published: Feb 3, 2026
Updated: Feb 3, 2026
Reserved: Jan 29, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	6.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N	Foxit

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Affected Products

Product	Versions
pdfonline.foxit.comFoxit Software Inc.	before 2026‑02‑03Affected

References

https://www.foxit.com/support/security-bulletins.html

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