Auth bypass in Hkuds Deeptutor
CVE-2026-58168
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (46.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
- Hkuds Deeptutor — versions 0
Weakness classification (CWE)
References
- github.com/HKUDS/DeepTutor/releases/tag/v1.4.10 (release-notes)
- github.com/HKUDS/DeepTutor/pull/579 (issue-tracking)
- github.com/HKUDS/DeepTutor/commit/90046374b3dcd4f8a866d2d64a64440bc08eb2ef (patch)
- www.vulncheck.com/advisories/deeptutor-insecure-default-grants-unrestricted-mcp… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-58168?
- CVE-2026-58168 is a high-severity vulnerability in Hkuds Deeptutor, classified under Missing Authorization. CVSS score: 8.8/10. Published 2026-06-30.
- How severe is CVE-2026-58168?
- High severity. CVSS v3 base score is 8.8 out of 10.