CVE-2026-58168: Deeptutor DeepTutor Missing MCP Tool Authorization Vulnerability

HIGH
Advisory Identifier: GHSA-jg88-rvpc-qvxj
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CVSS 8.8
CWE-862
Published
Advisory Summary

CVE-2026-58168 is a HIGH (CVSS 8.8) deeptutor missing mcp tool authorization vulnerability (CWE-862: Missing Authorization) affecting Deeptutor libraries in the PyPI ecosystem. The issue involves deeptutor missing mcp tool authorization allows non-admin users to invoke unrestricted tools. Remediation is available by upgrading affected packages to version 1.4.10.

CVE-2026-58168 at a Glance

CVE Identifier CVE-2026-58168
GHSA Identifier GHSA-jg88-rvpc-qvxj
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-862: Missing Authorization
Affected Product Deeptutor
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 8.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2026-58168

To remediate this vulnerability, upgrade all affected Deeptutor dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

deeptutor fixed: 1.4.10 
pip install deeptutor>=1.4.10
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show deeptutor

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2026-58168, inspect your installed packages using pip:

pip show deeptutor

Analyze the terminal output to locate any version of Deeptutor in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.4.10), your application is affected.

Note: The pip show deeptutor command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In Deeptutor, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2026-58168 Affected Deeptutor Versions

1 component(s)
Fixed Versions:
1.4.10
Product / Package Ecosystem Affected Versions Fixed Version
deeptutor
pypi/deeptutor
PyPI
< 1.4.10
1.4.10

References

NVD — CVE-2026-58168 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-58168
Deeptutor Source Repository REPOSITORY
https://github.com/HKUDS/DeepTutor/pull/579
Security Fix Commit FIX COMMIT
https://github.com/HKUDS/DeepTutor/commit/90046374b3dcd4f8a866d2d64a64440bc08eb2ef
Deeptutor Source Repository REPOSITORY
https://github.com/HKUDS/DeepTutor
Deeptutor Release RELEASE
https://github.com/HKUDS/DeepTutor/releases/tag/v1.4.10
www.vulncheck.com/advisories/deeptuto... WEB
https://www.vulncheck.com/advisories/deeptutor-insecure-default-grants-unrestricted-mcp-tool-access-to-non-admin-users

Frequently Asked Questions

What is CVE-2026-58168?
CVE-2026-58168 is a security vulnerability in Deeptutor involving DeepTutor missing MCP tool authorization allows non-admin users to invoke unrestricted tools under CWE-862: Missing Authorization.
Which Deeptutor versions are affected?
Affected versions include releases prior to 1.4.10 across affected packages: deeptutor.
What version fixes CVE-2026-58168?
Upgrading to 1.4.10 (or the latest patched release for your respective branch) resolves the vulnerability.
Is deeptutor affected?
Yes, deeptutor is affected in releases prior to 1.4.10. Upgrade your dependency to 1.4.10 or later.
What is the CVSS score of CVE-2026-58168?
CVE-2026-58168 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2026-58168?
CVE-2026-58168 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).
How can I check PyPI dependencies for CVE-2026-58168?
Run the dependency tree command: 'pip show deeptutor'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-jg88-rvpc-qvxj",
  "modified" : "2026-10-02T18:27:29Z",
  "published" : "2026-06-30T18:31:38Z",
  "aliases" : [ "CVE-2026-58168" ],
  "summary" : "DeepTutor missing MCP tool authorization allows non-admin users to invoke unrestricted tools",
  "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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  }, {
    "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "deeptutor"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.4.10"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-58168"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/HKUDS/DeepTutor/pull/579"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/HKUDS/DeepTutor/commit/90046374b3dcd4f8a866d2d64a64440bc08eb2ef"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/HKUDS/DeepTutor"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/HKUDS/DeepTutor/releases/tag/v1.4.10"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/deeptutor-insecure-default-grants-unrestricted-mcp-tool-access-to-non-admin-users"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-10-02T18:27:29Z",
    "nvd_published_at" : "2026-06-30T17:16:23Z"
  }
}