Kimai before 2.63.0 contains a business logic / improper authorization vulnerability in the team update API endpoint (PATCH /api/teams/{id}), which removes all existing team members before validating the submitted replacement member list. An authenticated teamlead (or other user) with permission to edit a team can submit a malformed members payload; although Kimai returns a validation error, the existing membership rows have already been deleted. This bypasses the dedicated member-removal endpoint's protection against removing teamleaders and can leave a team with no members or teamleaders, disrupting team-based access control.
History

Thu, 27 Aug 2026 06:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 25 Aug 2026 23:30:00 +0000

Type Values Removed Values Added
Description Kimai before 2.63.0 contains a business logic / improper authorization vulnerability in the team update API endpoint (PATCH /api/teams/{id}), which removes all existing team members before validating the submitted replacement member list. An authenticated teamlead (or other user) with permission to edit a team can submit a malformed members payload; although Kimai returns a validation error, the existing membership rows have already been deleted. This bypasses the dedicated member-removal endpoint's protection against removing teamleaders and can leave a team with no members or teamleaders, disrupting team-based access control.
Title Kimai before 2.63.0 Team Membership Removal via API
First Time appeared Kimai
Kimai kimai
Weaknesses CWE-841
CPEs cpe:2.3:a:kimai:kimai:*:*:*:*:*:*:*:*
Vendors & Products Kimai
Kimai kimai
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L'}

cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-08-25T23:19:02.395Z

Updated: 2026-08-26T16:10:29.520Z

Reserved: 2026-08-25T23:14:37.730Z

Link: CVE-2026-80195

cve-icon Vulnrichment

Updated: 2026-08-26T15:57:21.486Z

cve-icon NVD

Status : Deferred

Published: 2026-08-26T05:18:26.937

Modified: 2026-09-03T05:15:12.243

Link: CVE-2026-80195

cve-icon Redhat

No data.