CVE-2026-52827CWE-287

CVE-2026-52827

published September 15, 2026

CVSS
7.1
EPSS
1%
Percentile
46.7
In the wild
Unconfirmed
What it is

Kimai is an open-source time tracking application. Prior to 2.59.0, the KIMAI_SESSION cookie issued after password verification but before TOTP completion is accepted by every /api route because config/packages/security.yaml protects the API with IS_AUTHENTICATED and App\API\Authentication\ApiRequestMatcher routes an existing session through the main firewall. A Scheb TwoFactorToken satisfies that access rule, and App\Voter\ApiVoter grants API access to its User, allowing an attacker with a valid account password to use authenticated REST API operations without entering the second factor even though web routes remain blocked. This issue is fixed in version 2.59.0.

The record
Technical detail
CVSS
7.1 · NONE
CVSS v4.0
7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS
0.00576 · 46.7th percentile
Weakness
CWE-287 · Improper Authentication
Published
2026-09-15T15:17Z
References (5)
EPSS history
Timeline
  • 17 SEP 03:31Z
    EPSS moved — → 0%
    epss
  • 15 SEP 10:45Z
    Kimai: Two-factor authentication bypass on the Kimai API
    cvelistv5