CVE-2021-38678— Open Redirect Vulnerability in QcalAgent
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I. Basic Information for CVE-2021-38678
Vulnerability Information
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Vulnerability Title
Open Redirect Vulnerability in QcalAgent
Source: NVD (National Vulnerability Database)
Vulnerability Description
An open redirect vulnerability has been reported to affect QNAP device running QcalAgent. If exploited, this vulnerability allows attackers to redirect users to an untrusted page that contains malware. We have already fixed this vulnerability in the following versions of QcalAgent: QcalAgent 1.1.7 and later
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Qnap QcalAgent 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Qnap QcalAgent是中国威联通科技（Qnap）公司的一个时间管理中心。用于管理个人行程，与他人共用日历，分享彼此的排程。 QNAP QcalAgent 中存在输入验证错误漏洞，该漏洞源于未对用户输入数据进行适当处理。远程攻击者可利用该漏洞可以创建指向可信网站的链接，并将受害者重定向到任意域。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| QNAP Systems Inc. | QcalAgent | unspecified ~ 1.1.7 | - |
II. Public POCs for CVE-2021-38678
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · QNAP Systems Inc. · 2022-01-14 · 7 CVEs total
| CVE-2021-38682 | 8.1 HIGH | Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard |
| CVE-2021-38689 | 8.1 HIGH | Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard |
| CVE-2021-38690 | 8.1 HIGH | Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard |
| CVE-2021-38691 | 8.1 HIGH | Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard |
| CVE-2021-38692 | 8.1 HIGH | Stack Overflow Vulnerability in QVR Elite, QVR Pro and QVR Guard |
| CVE-2021-38677 | 5.3 MEDIUM | Reflected XSS Vulnerability in QcalAgent |
IV. Related Vulnerabilities
Same weakness: CWE-601
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Multiple vulnerabilities in Cradle e-commerce - CVE-2026-42259
Saltcorn: Open Redirect in `POST /auth/login` due to incompl - CVE-2026-6795
Open Redirect in DivvyDrive Information Technologies' DivvyD
V. Comments for CVE-2021-38678
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