CVE-2026-52824
Kimai: Default APP_SECRET in Docker Image Enables Cookie Forgery and Account Takeover
No known exploitation. EPSS puts it in the 70th percentile. No fix published yet.
What to do
No fixed build or workaround is published yet. Limit exposure and watch for a patch.
What it is
From the CVE record
Kimai is an open-source time tracking application. Prior to 2.58.0, the official Docker image sets APP_SECRET to the public value change_this_to_something_unique in Dockerfile, and .docker/entrypoint.sh neither replaces nor rejects that value before Symfony uses it as kernel.secret. An unauthenticated attacker who reaches a deployment that did not override APP_SECRET, knows a username, correctly guesses the account ID associated with that username, and targets an account without active two-factor authentication can forge HMAC-protected authentication artifacts, including KIMAI_REMEMBER cookies and login links, to access the account without its password. The updated entrypoint generates and persists a random secret when no safe operator-provided value exists. This issue is fixed in version 2.58.0.
In plain language
No plain-language summary for this CVE yet.
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
1.3% chance of exploitation activity in the next 30 days, which ranks it in the 70th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
5 events over 57 days, from the signal feeds we watch.
- Record updated
- Publishedweakness classified, record updated
- Nuclei check added
Affected products
Technical detail
Weaknesses
Sources
References in the record
- github.com/kimai/kimai/commit/31a8f887a5cda517db7b4320a7ad997c87d08601
- github.com/kimai/kimai/pull/5952
- github.com/kimai/kimai/releases/tag/2.58.0
And 2 more references. See all after sign-in
In the news
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