CVE-2021-39307 describes a cross-site scripting (XSS) vulnerability in PDFTron WebViewer UI versions 8.0 and below, where the software improperly renders dangerous URLs, including JavaScript URLs, as clickable hyperlinks within supported documents. This allows for the execution of arbitrary JavaScript code when a user interacts with the malicious link. The vulnerability has a CVSS score of 6.1 (Medium), indicating a network-based attack with low complexity requiring user interaction, potentially leading to limited impact on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 8.0CPE matchmatch criteria | cpe:2.3:a:pdftron:webviewer_ui:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.