CVE-2026-58168 DeepTutor < 1.4.10 - Insecure Default Grants Unrestricted MCP Tool Access to Non-Admin Users
Low-privilege users can invoke unrestricted MCP tools due to insecure default authorization logic, potentially accessing sensitive system resources.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-58168?
CVE-2026-58168 is a high-severity missing authorization vulnerability in HKUDS DeepTutor, published on 30 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2026-58168?
3 open source packages ship an affected version, including deeptutor.
| Package | Affected | Fixed in |
|---|---|---|
deeptutor PyPI | All versions | 1.4.10 |
deeptutor PyPI | All versions | 1.4.10 |
deeptutor PyPI | All versions | 1.4.10 |
How do I fix CVE-2026-58168?
Upgrade deeptutor to 1.4.10 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-58168 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-58168 exists.
Sources
Also known as GHSA-jg88-rvpc-qvxj, PYSEC-2026-4206.