Medium severity · published Sep 2, 2026
CVE-2026-84808
Kimai before 2.65.0 Authorization Bypass via API Timesheet
4.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KI
kimai · kimai
before 2.65.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-84808
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-84808
github.com
https://github.com/kimai/kimai/security/advisories/GHSA-c6j4-35fc-x3hw
www.vulncheck.com
https://www.vulncheck.com/advisories/kimai-before-2.65.0-authorization-bypass-via-api-timesheet
More from kimai
9.6
CVE-2020-19825
Cross Site Scripting (XSS) vulnerability in kevinpapst kimai2 1.30.0 in /src/Twig/Runtime/MarkdownExtension.php, allows attackers to gain escalated privileges
9.1
CVE-2026-52824
Kimai: Default APP_SECRET in Docker Image Enables Cookie Forgery and Account Takeover
8.8
CVE-2026-80202
Kimai before 2.56.0 Authorization Bypass via TimesheetVoter
8.8
CVE-2026-80193
Kimai before 2.62.0 Authorization Bypass via QuickEntry
8.8
CVE-2023-53957
Kimai 1.30.10 SameSite Cookie Vulnerability Session Hijacking