CVE-2026-58168

HIGH 8.8

DeepTutor < 1.4.10 - Insecure Default Grants Unrestricted MCP Tool Access to Non-Admin Users

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-862
Vendor	hkuds
Product	deeptutor
Published	Jun 30, 2026
Last Updated	Jun 30, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

HKUDS / DeepTutor

0 < 1.4.10

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/HKUDS/DeepTutor/releases/tag/v1.4.10 github.com: https://github.com/HKUDS/DeepTutor/pull/579 github.com: https://github.com/HKUDS/DeepTutor/commit/90046374b3dcd4f8a866d2d64a64440bc08eb2ef vulncheck.com: https://www.vulncheck.com/advisories/deeptutor-insecure-default-grants-unrestricted-mcp-tool-access-to-non-admin-users

Credits

Chia Min Jun Lennon