{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-52824","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-06-08T18:11:06.661Z","datePublished":"2026-09-15T10:40:28.739Z","dateUpdated":"2026-09-16T17:33:01.273Z"},"containers":{"cna":{"title":"Kimai: Default APP_SECRET in Docker Image Enables Cookie Forgery and Account Takeover","problemTypes":[{"descriptions":[{"cweId":"CWE-1188","lang":"en","description":"CWE-1188: Insecure Default Initialization of Resource","type":"CWE"}]}],"metrics":[{"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"HIGH","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","baseScore":9.1,"baseSeverity":"CRITICAL","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","version":"4.0"}}],"references":[{"name":"https://github.com/kimai/kimai/security/advisories/GHSA-jr9p-4h4j-6c58","tags":["x_refsource_CONFIRM"],"url":"https://github.com/kimai/kimai/security/advisories/GHSA-jr9p-4h4j-6c58"},{"name":"https://github.com/kimai/kimai/pull/5952","tags":["x_refsource_MISC"],"url":"https://github.com/kimai/kimai/pull/5952"},{"name":"https://github.com/kimai/kimai/commit/31a8f887a5cda517db7b4320a7ad997c87d08601","tags":["x_refsource_MISC"],"url":"https://github.com/kimai/kimai/commit/31a8f887a5cda517db7b4320a7ad997c87d08601"},{"name":"https://github.com/kimai/kimai/releases/tag/2.58.0","tags":["x_refsource_MISC"],"url":"https://github.com/kimai/kimai/releases/tag/2.58.0"},{"name":"https://www.kimai.org/en/security/ghsa-jr9p-4h4j-6c58","tags":["x_refsource_MISC"],"url":"https://www.kimai.org/en/security/ghsa-jr9p-4h4j-6c58"}],"affected":[{"vendor":"kimai","product":"kimai","versions":[{"version":"< 2.58.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-09-15T10:40:28.739Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-jr9p-4h4j-6c58","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-16T17:32:52.166965Z","id":"CVE-2026-52824","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-16T17:33:01.273Z"}}]}}