{"id":"CVE-2026-52821","title":"Kimai is an open-source time tracking application","summary":"Kimai is an open-source time tracking application. Prior to 2.57.0, GET or POST requests to /en/admin/activity/create/{project} and /en/admin/project/create/{customer} require only the generic create_activity or create_project capability…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","cwe":["CWE-639","CWE-862"],"vendor":"kimai","product":"kimai","affected":["kimai < 2.57.0"],"patched":["kimai/kimai 2.57.0"],"published":"2026-09-15","updated":"2026-09-17","sourceUpdated":"2026-09-17T15:16:47.470","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-52821","references":[{"url":"https://github.com/kimai/kimai/commit/976d38e8a4485a1c923ee7b5841849e91a06e849","label":"security-advisories@github.com"},{"url":"https://github.com/kimai/kimai/pull/5929","label":"security-advisories@github.com"},{"url":"https://github.com/kimai/kimai/releases/tag/2.57.0","label":"security-advisories@github.com"},{"url":"https://github.com/kimai/kimai/security/advisories/GHSA-3q6q-26vg-v97x","label":"security-advisories@github.com"},{"url":"https://www.kimai.org/en/security/ghsa-3q6q-26vg-v97x","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-3q6q-26vg-v97x"}],"tags":["nvd","cve.org","ghsa","composer"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-17T14:20:34.001069Z"},"cvssSource":"cna","epss":0.00257,"epssPercentile":0.17667,"aliases":["GHSA-3q6q-26vg-v97x"],"ecosystem":"composer","ingestedAt":"2026-07-14T00:31:48.541Z","slug":"CVE-2026-52821","body":"## Overview\n\nKimai is an open-source time tracking application. Prior to 2.57.0, GET or POST requests to /en/admin/activity/create/{project} and /en/admin/project/create/{customer} require only the generic create_activity or create_project capability and do not verify edit access to the supplied Project or Customer object. A user who knows a valid project.id or customer identifier can use the preset-parent creation logic in src/Controller/ActivityController.php or src/Controller/ProjectController.php to persist a new child business object under an unauthorized parent, polluting project or customer configuration and influencing later time-entry, rate, reporting, and billing behavior. This issue is fixed in version 2.57.0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-52821)\n\nAffected packages:\n\n- `kimai/kimai <= 2.56.0`\n\nPatched in:\n\n- `kimai/kimai 2.57.0`\n\nSource: https://github.com/advisories/GHSA-3q6q-26vg-v97x","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":203570,"id":"CVE-2026-52821","ts":1789472201729,"field":"cvss","old":null,"new":"5.3"}]}