Kimai before 2.63.0 Authorization Bypass via Team Access Endpoints
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
Kimai before 2.63.0 contains an improper authorization vulnerability in team access endpoints that allows authenticated users with team edit permissions and read-only access to grant team access to customers, projects, or activities. Attackers can exploit insufficient permission checks by sending POST requests to team access endpoints to modify access control lists for entities they should not be able to modify.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA kimai (kimai) Fixed in 2.63.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
kimai 2.63.0
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-58302 Kimai 2.61.0 before 2.63.0 Authentication Bypass via APIPriority LOW 24
Timeline
- 2026-10-02 Threatist record created from CVE-2026-84806
- 2026-10-03 Alias added: GHSA-9jvx-vm4p-vv5f
References
More kimai vulnerabilities
- TI-2023-30240 Kimai 1.30.10 SameSite Cookie Vulnerability Session Hijacking CVSS 4.0HIGH 8.5
- TI-2026-55437 Kimai before 2.58.0 Authentication Bypass via Password Reset Link CVSS 4.0HIGH 8.7
- TI-2026-55443 Kimai before 2.56.0 Authorization Bypass via TimesheetVoter CVSS 4.0CRITICAL 9.3
- TI-2026-22900 Kimai: API invoice endpoint missing customer-level access control (IDOR) CVSS 3.1MEDIUM 6.5
- TI-2026-55440 Kimai before 2.54.0 Username Enumeration via Timing Oracle CVSS 4.0MEDIUM 6.3
- TI-2026-37927 Incorrect authorization in kimai CVSS 4.0MEDIUM 6.3
Sources
- CVE-2026-84806 · CVE Program
- CVE-2026-84806 · NVD
- FIRST EPSS
- GHSA-9jvx-vm4p-vv5f · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences