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CVE-2026-80202— Kimai before 2.56.0 Authorization Bypass via TimesheetVoter

Quick assessment

Affected
kimai kimai
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Kimai 2.56.0 之前的版本中，TimesheetVoter::voteOnAttribute() 方法未强制实施团队成员身份检查，该方法仅将权限映射到 own_timesheet（自己记录的工时表）或 other_timesheet（他人记录的工时表）。因此，任何拥有 ROLE_TEAMLEAD 角色（或具备 edit_other_timesheet / delete_other_timesheet 权限的角色）的已认证用户，均可通过 API 读取、修改并永久删除系统中任意用户的工时表记录，无论其是否属于

CVSS 8.8 · High
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I. Basic Information for CVE-2026-80202

Vulnerability Information
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Vulnerability Title
Kimai before 2.56.0 Authorization Bypass via TimesheetVoter
Source: CVE Program / CVE List V5
Vulnerability Description
Kimai before 2.56.0 does not enforce team-membership checks in TimesheetVoter::voteOnAttribute(), which maps permissions only to own_timesheet or other_timesheet. As a result, any authenticated user with ROLE_TEAMLEAD (or a role holding edit_other_timesheet/delete_other_timesheet) can read, modify, and permanently delete timesheets belonging to any user system-wide via the API, regardless of team membership. Timesheet IDs are sequential integers and trivially enumerable. ROLE_USER accounts are correctly restricted. (Note: the maintainers characterize this behavior as matching the documented permission model.)
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
kimai kimai 0 ~ 2.56.0 -

II. Public POCs for CVE-2026-80202

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7592 chars
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III. Intelligence Information for CVE-2026-80202

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Vendor Advisories for CVE-2026-80202 (2)

Same Patch Batch · kimai · 2026-08-25 · 10 CVEs total

CVE-2026-80193 8.8 HIGH Kimai before 2.62.0 Authorization Bypass via QuickEntry
CVE-2026-80196 7.5 HIGH Kimai before 2.58.0 Authentication Bypass via Password Reset Link
CVE-2026-80198 7.5 HIGH Kimai before 2.56.0 Information Disclosure via config() Twig Function
CVE-2026-80195 5.4 MEDIUM Kimai before 2.63.0 Team Membership Removal via API
CVE-2026-80194 4.3 MEDIUM Kimai before 2.64.0 Missing Authorization via ProjectViewController export
CVE-2026-80197 4.3 MEDIUM Kimai before 2.57.0 Improper Authorization via Favorite Endpoints
CVE-2026-80199 3.7 LOW Kimai before 2.54.0 Username Enumeration via Timing Oracle
CVE-2026-80201 2.0 LOW Kimai before 2.53.0 API Token Leakage via Invoice Template
CVE-2026-80200 Kimai before 2.53.0 Open Redirect via RelayState

IV. Related Vulnerabilities

Same product: kimai
Same vendor: kimai
Same weakness: CWE-863

V. Comments for CVE-2026-80202

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