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CVE-2026-80197— Kimai before 2.57.0 Improper Authorization via Favorite 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是Kimai团队开源的一款项目管理系统。 Kimai 2.57.0之前版本存在授权问题漏洞，该漏洞源于收藏时间表添加和删除端点存在授权不当问题，允许已认证用户通过引用其他用户的时间表标识符添加或删除其收藏列表中的条目，导致跨用户业务状态篡改。

CVSS 4.3 · Medium EPSS 0.26% · P17

Possible ATT&CK Techniques 1 AI

T1133 · External Remote Services

Affected Version Matrix 2

VendorProduct Version RangeStatus
kimai kimai < 2.57.0 affected
2.57.0 unaffected
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I. Basic Information for CVE-2026-80197

Vulnerability Information
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Vulnerability Title
Kimai before 2.57.0 Improper Authorization via Favorite Endpoints
Source: CVE Program / CVE List V5
Vulnerability Description
Kimai before 2.57.0 contains an improper authorization vulnerability in the favorite timesheet add and remove endpoints that allows authenticated users to manipulate other users' bookmarks. Attackers can add or remove timesheet entries from another user's favorite list by referencing their timesheet identifier, enabling cross-user business-state tampering without administrative privileges.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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
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 2.57.0之前版本存在授权问题漏洞，该漏洞源于收藏时间表添加和删除端点存在授权不当问题，允许已认证用户通过引用其他用户的时间表标识符添加或删除其收藏列表中的条目，导致跨用户业务状态篡改。
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 ~ 2.57.0 -

II. Public POCs for CVE-2026-80197

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III. Intelligence Information for CVE-2026-80197

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Vendor Advisories for CVE-2026-80197 (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-2026-80202 8.8 HIGH Kimai before 2.56.0 Authorization Bypass via TimesheetVoter
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-2026-80200 4.7 MEDIUM Kimai before 2.53.0 Open Redirect via RelayState
CVE-2026-80194 4.3 MEDIUM Kimai before 2.64.0 Missing Authorization via ProjectViewController export
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

IV. Related Vulnerabilities

Same product: kimai
Same vendor: kimai
Same weakness: CWE-639

V. Comments for CVE-2026-80197

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