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  4. CVE 2026 52824 kimai default appsecret in docker image enables
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Back to active CVEs
Critical · CVSS 9.1CVE-2026-52824GHSA-JR9P-4H4J-6C58

Kimai: Default APP_SECRET in Docker Image Enables Cookie Forgery and Account TakeoverCVE-2026-52824

Answer in brief

CVE-2026-52824 records a Critical severity (CVSS 9.1) vulnerability in Kimai: Default APP_SECRET in Docker Image Enables Cookie Forgery and Account Takeover. The current sources do not mark it as known exploited. The current feed maps kimai/kimai (composer), kimai/kimai (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 15, 2026Updated Sep 30, 2026Source checked Nov 1, 2026First seen by HOL Jul 14, 2026Material review Sep 30, 2026
Upstream Advisory

Key facts

Risk
Critical · CVSS 9.1
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 9.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps kimai/kimai (composer), kimai/kimai (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
kimai/kimaicomposer<=2.57.02.58.0
kimai/kimaigeneric<2.58.02.58.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for kimai/kimai, kimai/kimai.
  2. 2Review the reported fix. Update kimai/kimai to 2.58.0; kimai/kimai to 2.58.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Sep 15, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Sep 30, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Jul 14, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referencekimai.org
  • GitHub security advisorygithub.com
Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • WebDyne versions from 2.022 before 3.022 for Perl disclose application source to unauthenticated clients via the viewer in the default index pageAlso CWE-1188

Record context

Vulnerability class
Missing Auth
EPSS
Not reported
CWE IDs
CWE-1188
Source
CVE List V5
Source checked
Nov 1, 2026
References
6 linked sources
Open source record