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CVE-2026-68582— Vikunja 0.24.0 Broken Object Level Authorization via Link-Share Token

Quick assessment

Affected
go-vikunja vikunja
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Vikunja是Vikunja团队开源的一个待办事项应用程序。 Vikunja 0.24.0版本至2.3.0版本存在授权问题漏洞，该漏洞源于任务收集端点从URL路径加载项目视图时未验证调用者是否被授权，导致对象级授权失效，链接共享令牌持有者可能读取其他租户的看板桶记录及用户信息。

CVSS 6.5 · Medium EPSS 0.36% · P27

Affected Version Matrix 1

VendorProduct Version RangeStatus
go-vikunja vikunja 0.24.0< 2.4.0 affected
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I. Basic Information for CVE-2026-68582

Vulnerability Information
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Vulnerability Title
Vikunja 0.24.0 Broken Object Level Authorization via Link-Share Token
Source: CVE Program / CVE List V5
Vulnerability Description
Vikunja versions >= 0.24.0 and <= 2.3.0 contain a broken object level authorization (BOLA) vulnerability in the task-collection endpoint (GET /api/v1/projects/{project}/views/{view}/tasks). The endpoint loads the requested project view from the URL path without verifying the caller is authorized for it. For a link-share token holder, the task scope is pinned to the share's own project, but the view is taken from the attacker-controlled path and never re-validated. As a result, a holder of any project share link can read any other tenant's kanban bucket records — bucket titles and the full created_by user object (username, name, id) — for every view in the instance. The same missing pre-authorization view load also creates a project/view-ID existence oracle (404 vs. non-404) usable by link shares and ordinary authenticated users. Task contents remain constrained to the share's own project and are not disclosed. Fixed in 2.4.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
Vikunja 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Vikunja是Vikunja团队开源的一个待办事项应用程序。 Vikunja 0.24.0版本至2.3.0版本存在授权问题漏洞，该漏洞源于任务收集端点从URL路径加载项目视图时未验证调用者是否被授权，导致对象级授权失效，链接共享令牌持有者可能读取其他租户的看板桶记录及用户信息。
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
go-vikunja vikunja 0.24.0 ~ 2.4.0 -

II. Public POCs for CVE-2026-68582

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III. Intelligence Information for CVE-2026-68582

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Vendor Advisories for CVE-2026-68582 (1)

News Coverage for CVE-2026-68582 (1)

IV. Related Vulnerabilities

Same product: vikunja
Same vendor: go-vikunja
Same weakness: CWE-639

V. Comments for CVE-2026-68582

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