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I. Basic Information for CVE-2026-33676
Vulnerability Information

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Vulnerability Title
Vikunja has Cross-Project Information Disclosure via Task Relations — Missing Authorization Check on Related Task Read
Source: NVD (National Vulnerability Database)
Vulnerability Description
Vikunja is an open-source self-hosted task management platform. Prior to version 2.2.1, when the Vikunja API returns tasks, it populates the `related_tasks` field with full task objects for all related tasks without checking whether the requesting user has read permission on those tasks' projects. An authenticated user who can read a task that has cross-project relations will receive full details (title, description, due dates, priority, percent completion, project ID, etc.) of tasks in projects they have no access to. Version 2.2.1 patches the issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
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 2.2.1之前版本存在安全漏洞,该漏洞源于返回相关任务时未检查读取权限,可能导致信息泄露。
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 < 2.2.1 -
II. Public POCs for CVE-2026-33676
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III. Intelligence Information for CVE-2026-33676
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IV. Related Vulnerabilities
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