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Medium severity6.9NVD Advisory· Published Nov 13, 2021· Updated Jun 17, 2026

CVE-2021-34357

CVE-2021-34357

Description

A cross-site scripting (XSS) vulnerability has been reported to affect QNAP device running QmailAgent. If exploited, this vulnerability allows remote attackers to inject malicious code. We have already fixed this vulnerability in the following versions of QmailAgent: QmailAgent 3.0.2 ( 2021/08/25 ) and later

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Affected products

3
  • Qnap/QmailAgent2 versions
    cpe:2.3:a:qnap:qmailagent:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:qnap:qmailagent:*:*:*:*:*:*:*:*range: <3.0.2
    • (no CPE)range: >=3.0.2
  • QNAP Systems Inc./QmailAgentv5
    Range: unspecified

Patches

Vulnerability mechanics

References

1

News mentions

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