hkuds/deeptutor · Security
DeepTutor missing MCP tool authorization allows non-admin users to invoke unrestricted tools
- GHSA ID
- GHSA-jg88-rvpc-qvxj
- CVE ID
- CVE-2026-58168
- Severity
- high
- Published
- Updated
- CVSS
- 8.8 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS v3
- 8.8 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS v4
- 7.7 · 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
Description
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.
CWEs
- CWE-862 · Missing Authorization
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-58168 ↗
- https://github.com/HKUDS/DeepTutor/pull/579 ↗
- https://github.com/HKUDS/DeepTutor/commit/90046374b3dcd4f8a866d2d64a64440bc08eb2ef ↗
- https://github.com/HKUDS/DeepTutor/releases/tag/v1.4.10 ↗
- https://www.vulncheck.com/advisories/deeptutor-insecure-default-grants-unrestricted-mcp-tool-access-to-non-admin-users ↗
- https://github.com/advisories/GHSA-jg88-rvpc-qvxj ↗