CVE-2026-19244

A vulnerability was detected in HKUDS nanobot up to 0.2.1. The affected element is the function connect_mcp_servers of the file nanobot/agent/tools/mcp.py of the component MCP enabledTools Scope Handler. Performing a manipulation results in improper access controls. The attack is possible to be carried out remotely. The exploit is now public and may be used. Upgrading to version 0.3.0 is sufficient to fix this issue. The patch is named 4436. You should upgrade the affected component. Multiple issues were reported to the project. They reacted with a high level of professionalism and kindness: "Both reports describe the same root cause: MCP resource and prompt wrappers could be registered outside the intended enabledTools scope. The registration boundary was corrected".

CVSS v3 4.7 MEDIUM
CVSS v2.0 5.8 MEDIUM

4.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.2 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

5.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:M/C:P/I:P/A:P

Exploitability : 6.4 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication MULTIPLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://gist.github.com/YLChen-007/3de5f50d167a878f7530f57ed018d508
https://github.com/HKUDS/nanobot/
https://github.com/HKUDS/nanobot/issues/4435
https://github.com/HKUDS/nanobot/pull/4436
https://github.com/HKUDS/nanobot/releases/tag/v0.3.0
https://vuldb.com/cve/CVE-2026-19244
https://vuldb.com/submit/865116
https://vuldb.com/submit/865118
https://vuldb.com/vuln/386998
https://vuldb.com/vuln/386998/cti

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-07 21:17

Updated : 2026-08-12 21:00

NVD link : CVE-2026-19244

Mitre link : CVE-2026-19244

CVE.ORG link : CVE-2026-19244

JSON object : View

Products Affected

No product.

CWE

CWE-266

Incorrect Privilege Assignment

CWE-284

Improper Access Control

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The affected element is the function connect_mcp_servers of the file nanobot/agent/tools/mcp.py of the component MCP enabledTools Scope Handler. Performing a manipulation results in improper access controls. The attack is possible to be carried out remotely. The exploit is now public and may be used. Upgrading to version 0.3.0 is sufficient to fix this issue. The patch is named 4436. You should upgrade the affected component. Multiple issues were reported to the project. They reacted with a high level of professionalism and kindness: \"Both reports describe the same root cause: MCP resource and prompt wrappers could be registered outside the intended enabledTools scope. The registration boundary was corrected\"."}], "lastModified": "2026-08-12T21:00:37.147", "sourceIdentifier": "cna@vuldb.com"}