CVE-2021-34359 is a medium-severity cross-site scripting (XSS) vulnerability affecting QNAP Proxy Server versions prior to 1.4.2 on QTS 4.5.x and later. This flaw allows authenticated remote attackers to inject malicious code, potentially leading to client-side compromise. The CVSSv3.1 score of 5.4 reflects its network-based attack vector, low attack complexity, and required user interaction, with impacts on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 1.4.2CPE matchmatch criteria | cpe:2.3:a:qnap:nas_proxy_server:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.