CVE-2026-52824 Details.
Kimai <= 2.57.0 - Default APP_SECRET Authentication Bypass
Atlas does not check this one. Needs a scripted sequence.
This check is a series of requests where each step depends on the last, often after logging in. Atlas runs single, read-only probes, so it does not run this one.
About CVE-2026-52824. What It Means.
Kimai Docker images <= 2.57.0 ship with a hardcoded APP_SECRET of "change_this_to_something_unique". This default secret is used by Symfony's SignatureHasher to HMAC-sign login links and remember-me cookies. An unauthenticated attacker who knows this default secret can forge valid authentication tokens and hijack any user account, including the super-admin.
Affected Product. What Is Hit.
- Vendor
- kimai
- Product
- Kimai
References. Where To Read More.
FAQ
Common Questions.
Kimai <= 2.57.0 - Default APP_SECRET Authentication Bypass. Kimai Docker images <= 2.57.0 ship with a hardcoded APP_SECRET of "change_this_to_something_unique". This default secret is used by Symfony's SignatureHasher to HMAC-sign login links and remember-me cookies. An unauthenticated attacker who knows this default secret can forge valid authentication tokens and hijack any user account, including the super-admin.
No. This check is a series of requests where each step depends on the last, often after logging in. Atlas runs single, read-only probes, so it does not run this one. The facts about CVE-2026-52824 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-52824 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Kimai to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-52824. Atlas does not run a check for it, so nothing here says whether a particular site is affected.