{"id":"CVE-2026-58168","summary":"DeepTutor \u003c 1.4.10 - Insecure Default Grants Unrestricted MCP Tool Access to Non-Admin Users","details":"DeepTutor before version 1.4.10 contains an authorization bypass vulnerability that allows low-privilege users to invoke unrestricted MCP tools due to the allowed_mcp_tools function returning None instead of a denied result when mcp_tools is omitted from a user's grant in deeptutor/multi_user/tool_access.py. Attackers or prompt-injected content acting within a user session can enumerate and invoke any configured MCP tool, including filesystem, shell, and browser servers, gaining unauthorized access to sensitive deployment resources.","modified":"2026-07-16T03:31:17.965400346Z","published":"2026-06-30T15:52:22.032Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58168.json","cna_assigner":"VulnCheck","cwe_ids":["CWE-862"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58168.json"},{"type":"ADVISORY","url":"https://github.com/HKUDS/DeepTutor/releases/tag/v1.4.10"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58168"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/deeptutor-insecure-default-grants-unrestricted-mcp-tool-access-to-non-admin-users"},{"type":"REPORT","url":"https://github.com/HKUDS/DeepTutor/pull/579"},{"type":"FIX","url":"https://github.com/HKUDS/DeepTutor/commit/90046374b3dcd4f8a866d2d64a64440bc08eb2ef"},{"type":"PACKAGE","url":"https://github.com/HKUDS/DeepTutor"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/hkuds/deeptutor","events":[{"introduced":"0"},{"fixed":"59f499b2c3c80edede0d4e853382dad745b96c67"},{"fixed":"90046374b3dcd4f8a866d2d64a64440bc08eb2ef"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"1.4.10"}],"source":["DESCRIPTION","REFERENCES"]}}],"versions":["v1.4.6","v1.4.9","v1.4.8","v1.4.7","v1.4.5","v1.4.4","v1.4.3","v1.4.2","v1.4.1","v1.4.0","v1.4.0-beta","v1.3.10","v1.3.9","v1.3.8","v1.1.0","v1.0.2","v1.0.1","v1.0.0-beta.4","v1.0.0-beta.3","v1.0.0-beta.2","v1.0.0-beta.1","v0.6.0","v0.5.2","v0.5.1","v0.4.1","v0.4.0","v0.3.0","v0.2.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-58168.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}