CVE-2021-34357

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

• CWE-79

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

Published

Nov 13, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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