CVE-2021-34357

MEDIUM

QNAP QmailAgent < 3.0.2 - Cross-Site Scripting

Title source: llm
STIX 2.1

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

References (1)

Core 1
Core References
Vendor Advisory x_refsource_misc
https://www.qnap.com/en/security-advisory/qsa-21-47

Scores

CVSS v3 6.9
EPSS 0.0035
EPSS Percentile 57.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N

Details

CWE
CWE-79
Status published
Products (1)
qnap/qmailagent < 3.0.2
Published Nov 13, 2021
Tracked Since Feb 18, 2026