CVE-2026-1591— Stored XSS via Attachments Feature in https://pdfonline.foxit.com/
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I. Basic Information for CVE-2026-1591
Vulnerability Information
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Vulnerability Title
Stored XSS via Attachments Feature in https://pdfonline.foxit.com/
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Foxit PDF Editor Cloud 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Foxit PDF Editor Cloud是美国Foxit公司的一个基于浏览器的在线PDF编辑平台。 Foxit PDF Editor Cloud 2026-02-03之前版本存在安全漏洞，该漏洞源于文件上传功能中恶意用户名未正确转义，可能导致存储型跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Foxit Software Inc. | pdfonline.foxit.com | before 2026‑02‑03 | - |
II. Public POCs for CVE-2026-1591
| # | POC Description | Source Link | Shenlong Link |
|---|
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IV. Related Vulnerabilities
Same product: pdfonline.foxit.com
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Stored XSS via Create New Layer Field found in Foxit PDF Edi - CVE-2025-66522
Foxit pdfonline.foxit.com Stored Cross-Site Scripting in Dig - CVE-2025-66521
Foxit pdfonline.foxit.com Stored Cross-Site Scripting in Tru - CVE-2025-66520
Foxit pdfonline.foxit.com Stored Cross-Site Scripting in Por - CVE-2025-66519
Foxit pdfonline.foxit.com Stored Cross-Site Scripting in Lay
Same vendor: Foxit Software Inc.
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Foxit PDF Editor/Reader Annotation Use-After-Free Remote Cod - CVE-2026-5942
Foxit PDF Editor/Reader AcroForm Signature Use-After-Free Vu - CVE-2026-5943
Foxit PDF Editor/Reader AcroForm Annotation Use-After-Free R
Same weakness: CWE-79
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V. Comments for CVE-2026-1591
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