CVE-2026-58168Public exploitNetwork attack vector

Authenticated MCP tool access via fail-open grant

Published Jun 30, 2026 · Updated Jun 30, 2026

Authorization bypass in Data Intelligence Lab @ HKU DeepTutor before 1.4.10 allows remote authenticated users to invoke unrestricted MCP tools. The allowed_mcp_tools function in deeptutor/multi_user/tool_access.py returns None when a non-admin grant omits mcp_tools, and the chat pipeline interprets None as unrestricted access. Exploitation requires multi-user mode and configured MCP servers; a low-privilege session can reach exposed filesystem, shell, browser, or internal-service capabilities.

CVSS severity7.7
High
EPSS probability0.60%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Authorization bypass in Data Intelligence Lab @ HKU DeepTutor before 1.4.10 allows remote authenticated users to invoke unrestricted MCP tools. The allowed_mcp_tools function in deeptutor/multi_user/tool_access.py returns None when a non-admin grant omits mcp_tools, and the chat pipeline interprets None as unrestricted access. Exploitation requires multi-user mode and configured MCP servers; a low-privilege session can reach exposed filesystem, shell, browser, or internal-service capabilities.

The record

CVE
CVE-2026-58168
Published
Jun 30, 2026
Updated
Jun 30, 2026
Vendor
Data Intelligence Lab @ HKU
Product
DeepTutor
Classifications
CWE-862, T1210
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 30, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 30, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.4.10

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Data Intelligence Lab @ HKU · DeepTutorversion=0 <1.4.10

Published CVSS scores

8.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1210Exploitation of Remote Services

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo