CVE-2021-34357

MediumCVSS 6.1/10Last modified Jun 17, 2026

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

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

Vendor	Product	Versions
QNAP Systems Inc.	QmailAgent	>= unspecified, < 3.0.2 ( 2021/08/25 )

References

https://www.qnap.com/en/security-advisory/qsa-21-47Vendor Advisory
https://www.qnap.com/en/security-advisory/qsa-21-47Vendor Advisory

Timeline

Published: Nov 13, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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