{"id":"CVE-2026-76647","title":"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","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 not enforce authorization before invoking service-layer …","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-200","CWE-639","CWE-862"],"published":"2026-08-19","updated":"2026-09-08","sourceUpdated":"2026-09-08T14:07:24.140","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-76647","references":[{"url":"https://leantime.io/unlocking-leantimes-power-a-guide-to-the-json-rpc-api/","label":"cret@cert.org"},{"url":"https://vokecyber.com/blog/leantime-jsonrpc-editown-account-takeover","label":"cret@cert.org"},{"url":"https://vokecyber.com/research/leantime-jsonrpc-editown-account-takeover","label":"cret@cert.org"},{"url":"https://vokecyber.com/research/leantime-jsonrpc-editown-account-takeover","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00375,"epssPercentile":0.31373,"ingestedAt":"2026-09-08T15:33:26.954Z","slug":"CVE-2026-76647","body":"## Overview\n\nLeantime 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}