CVE-2026-84804CWE-284broken-access-control

CVE-2026-84804

Medium · published September 2, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
24.5
In the wild
Unconfirmed
What it is

Kimai before 2.65.0 fails to properly validate permissions when removing team access to activities, projects, and customers via API endpoints. Authenticated users with edit_team permission can revoke team access without the required permissions_activity check, bypassing authorization controls.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CVSS v4.0
5.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
EPSS
0.00326 · 24.5th percentile
Weakness
CWE-284 · Improper Access Control
Published
2026-09-02T16:17Z
References (2)
https://github.com/kimai/kimai/security/advisories/GHSA-mc86-77vp-82g3 · [email protected]https://www.vulncheck.com/advisories/kimai-before-2.65.0-authorization-bypass-via-team-activity-api · [email protected]
EPSS history
Timeline
  • 04 SEP 03:44Z
    EPSS moved — → 0%
    epss
  • 02 SEP 11:11Z
    Kimai before 2.65.0 Authorization Bypass via Team Activity API
    cvelistv5