CVE-2021-39307

PoC —

CVSS 3.1

6.1 medium

EPSS

1%p64

Published

Sep 15, 2021 (Sep 15, 2021)

Modified

Jun 17, 2026

Description

PDFTron's WebViewer UI 8.0 or below renders dangerous URLs as hyperlinks in supported documents, including JavaScript URLs, allowing the execution of arbitrary JavaScript code.

Vendors: pdftron
Products: webviewer ui
Weakness: CWE-79
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (1.1%)

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