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CVE-2026-84806— Kimai before 2.63.0 Authorization Bypass via Team Access Endpoints

Quick assessment

Affected
kimai kimai
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.

Kimai 在 2.63.0 之前的版本中，团队访问端点存在不恰当的授权漏洞。该漏洞允许拥有团队编辑权限和只读访问权限的已认证用户向客户、项目或活动授予团队访问权限。攻击者可以通过向团队访问端点发送 POST 请求，利用不足的权限检查机制，修改本不该由其修改的实体的访问控制列表。

CVSS 5.4 · Medium
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I. Basic Information for CVE-2026-84806

Vulnerability Information
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Vulnerability Title
Kimai before 2.63.0 Authorization Bypass via Team Access Endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
Kimai before 2.63.0 contains an improper authorization vulnerability in team access endpoints that allows authenticated users with team edit permissions and read-only access to grant team access to customers, projects, or activities. Attackers can exploit insufficient permission checks by sending POST requests to team access endpoints to modify access control lists for entities they should not be able to modify.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键资源的不正确权限授予
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
kimai kimai 0 ~ 2.63.0 -

II. Public POCs for CVE-2026-84806

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III. Intelligence Information for CVE-2026-84806

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Other References for CVE-2026-84806 (2)

Same Patch Batch · kimai · 2026-09-02 · 5 CVEs total

CVE-2026-84807 5.4 MEDIUM Kimai before 2.65.0 Authentication Bypass via Team Creation
CVE-2026-84804 5.4 MEDIUM Kimai before 2.65.0 Authorization Bypass via Team Activity API
CVE-2026-84808 4.3 MEDIUM Kimai before 2.65.0 Authorization Bypass via API Timesheet
CVE-2026-84805 4.3 MEDIUM Kimai 2.61.0 before 2.63.0 Authentication Bypass via API

IV. Related Vulnerabilities

Same product: kimai
Same vendor: kimai
Same weakness: CWE-732

V. Comments for CVE-2026-84806

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