PT-2026-60091
CVE-2026-52824
·
Published
2026-07-14
·
Updated
2026-09-16
Description by
CVSS 4.0
9.1
CriticalMetricsAV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Name of the Vulnerable Software and Affected Versions
Kimai versions prior to 2.58.0
Description
The official Docker image includes a default environment variable
APP SECRET set to a publicly known value. Because the Docker entrypoint does not validate or override this value, instances deployed without a custom APP SECRET use a known Symfony kernel.secret. This allows an unauthenticated attacker to forge HMAC-signed cookies, login links, password reset URLs, and CSRF tokens. By guessing a user ID and knowing a username, an attacker can take over any account, including the super admin, provided the account does not have two-factor authentication enabled.Recommendations
Update to version 2.58.0.
As a temporary mitigation, explicitly set a unique and random value for the
APP SECRET environment variable in the Docker configuration. Found an issue in the description? Have something to add? Feel free to write us 👾