{"id":"CVE-2026-76647","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-76647","summary":"Leantime JSON-RPC API through version 3.9.0 contains a missing authorization vulnerability in the JSON-RPC dispatcher in app/Domain/Api/Controllers/Jsonrpc.php. The dispatcher does…","details":"Leantime JSON-RPC API through version 3.9.0 contains a missing authorization vulnerability in the JSON-RPC dispatcher in app/Domain/Api/Controllers/Jsonrpc.php. The dispatcher does not enforce authorization before invoking service-layer methods, allowing an authenticated user to call methods or act on resources outside their intended permissions. For example, the editOwn method accepts a user-supplied user ID without verifying that it belongs to the caller, allowing an attacker to modify another user's account and set a new password, resulting in account takeover. This vulnerability is distinct from CVE-2026-59712 and CVE-2026-15509 because the root cause is the lack of centralized authorization enforcement in the JSON-RPC dispatcher rather than the behavior of an individual exposed method.","published":"2026-08-19T20:17:24.013","modified":"2026-08-27T17:20:17.587","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://leantime.io/unlocking-leantimes-power-a-guide-to-the-json-rpc-api/"},{"type":"WEB","url":"https://vokecyber.com/blog/leantime-jsonrpc-editown-account-takeover"},{"type":"WEB","url":"https://vokecyber.com/research/leantime-jsonrpc-editown-account-takeover"},{"type":"WEB","url":"https://vokecyber.com/research/leantime-jsonrpc-editown-account-takeover"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-27T17:20:17.587"}}