CVE-2021-39307

Published: Sep 15, 2021Modified: Jun 17, 2026

6.1

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitability: 2.8 / Impact: 2.7

Source: NVD

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.

Affected (1)

Products: Pdftron: Webviewer Ui

Pdftron

1 product

Webviewer Ui

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Pdftron Webviewer Ui	Up to 8.0

Related CWEs

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (4)

https://research.nccgroup.com/2021/09/14/technical-advisory-pdftron-javascript-urls-allowed-in-webviewer-ui-cve-2021-39307/

Source: cve@mitre.org

ExploitPatchThird Party Advisory

https://www.pdftron.com/webviewer/

Source: cve@mitre.org

ProductVendor Advisory

https://research.nccgroup.com/2021/09/14/technical-advisory-pdftron-javascript-urls-allowed-in-webviewer-ui-cve-2021-39307/

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitPatchThird Party Advisory

https://www.pdftron.com/webviewer/

Source: af854a3a-2127-422b-91ae-364da2661108

ProductVendor Advisory

Timeline

No history available yet.