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Medium severity6.9NVD Advisory· Published Feb 25, 2022· Updated Jun 17, 2026

CVE-2021-34359

CVE-2021-34359

Description

A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running Proxy Server. If exploited, this vulnerability allows remote attackers to inject malicious code. We have already fixed this vulnerability in the following versions of Proxy Server: QTS 4.5.x: Proxy Server 1.4.2 ( 2021/12/30 ) and later

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

3
  • Qnap/Nas Proxy Server
    cpe:2.3:a:qnap:nas_proxy_server:*:*:*:*:*:*:*:*
    Range: <1.4.2
  • Qnap/Proxy Serverllm-create
    Range: QTS 4.5.x: Proxy Server <1.4.2 ( 2021/12/30 )
  • QNAP Systems Inc./Proxy Serverv5
    Range: unspecified

Patches

Vulnerability mechanics

References

1

News mentions

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