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CVE-2026-84808— Kimai before 2.65.0 Authorization Bypass via API Timesheet

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是Kimai团队开源的一款项目管理系统。 Kimai 2.65.0之前版本存在授权问题漏洞，该漏洞源于REST API timesheet collection端点未能执行活动团队访问控制，可能导致具有view_other_timesheet权限的用户列出使用限制为不属于其团队的活动的时间表，绕过预期数据隔离。

CVSS 4.3 · Medium EPSS 0.30% · P22

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
kimai kimai < 2.65.0 affected
2.65.0 unaffected
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I. Basic Information for CVE-2026-84808

Vulnerability Information
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Vulnerability Title
Kimai before 2.65.0 Authorization Bypass via API Timesheet
Source: CVE Program / CVE List V5
Vulnerability Description
Kimai versions before 2.65.0 contain an authorization bypass vulnerability in the REST API timesheet collection endpoint that fails to enforce activity-team access controls. Users with view_other_timesheet permission can list timesheets using activities restricted to teams they do not belong to, bypassing intended data isolation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Kimai 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kimai是Kimai团队开源的一款项目管理系统。 Kimai 2.65.0之前版本存在授权问题漏洞，该漏洞源于REST API timesheet collection端点未能执行活动团队访问控制，可能导致具有view_other_timesheet权限的用户列出使用限制为不属于其团队的活动的时间表，绕过预期数据隔离。
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
kimai kimai 0 ~ 2.65.0 -

II. Public POCs for CVE-2026-84808

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III. Intelligence Information for CVE-2026-84808

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Vendor Advisories for CVE-2026-84808 (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-2026-84806 5.4 MEDIUM Kimai before 2.63.0 Authorization Bypass via Team Access Endpoints
CVE-2026-84804 5.4 MEDIUM Kimai before 2.65.0 Authorization Bypass via Team Activity API
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-863

V. Comments for CVE-2026-84808

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