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I. Basic Information for CVE-2026-33315
Vulnerability Information

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Vulnerability Title
Vikunja has a 2FA Bypass via Caldav Basic Auth
Source: NVD (National Vulnerability Database)
Vulnerability Description
Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.0, the Caldav endpoint allows login using Basic Authentication, which in turn allows users to bypass the TOTP on 2FA-enabled accounts. The user can then access standard project information that would normally be protected behind 2FA (if enabled), such as project name, description, etc. Version 2.2.0 patches the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用候选路径或通道进行的认证绕过
Source: NVD (National Vulnerability Database)
Vulnerability Title
Vikunja 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vikunja是Vikunja开源的一个待办事项应用程序。 Vikunja 2.2.0之前版本存在安全漏洞,该漏洞源于Caldav端点允许使用基本身份验证登录,可能导致用户绕过启用了双因素认证的账户的TOTP。
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
VendorProductAffected VersionsCPESubscribe
go-vikunjavikunja < 2.2.0 -
II. Public POCs for CVE-2026-33315
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III. Intelligence Information for CVE-2026-33315
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IV. Related Vulnerabilities
V. Comments for CVE-2026-33315

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