CVE-2026-17433 - Vulnerability Details

- nanocoai NanoClaw MCP Server Approval chat-sdk-bridge.ts createChatSdkBridge.setup improper authorization

Description

A vulnerability was detected in nanocoai NanoClaw up to 2.0.64. This impacts the function createChatSdkBridge.setup of the file src/channels/chat-sdk-bridge.ts of the component MCP Server Approval. Performing a manipulation results in improper authorization. The attack needs to be approached locally. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Published: 2026-07-26

Score: 4.8 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

The vulnerability permits a local attacker to bypass authorization checks in the createChatSdkBridge.setup function of NanoClaw’s MCP Server Approval component, allowing unauthorized interactions with the chat SDK bridge. This is a classic improper authorization flaw (CWE-266, CWE-285) that can let an attacker manipulate protected resources or perform privileged actions that should not be available to them.

Affected Systems

The flaw affects nanocoai NanoClaw versions up to 2.0.64. Any installation of these releases may be vulnerable, with the CPE indicating all variants of the product are potentially impacted until a secure version is released.

Risk and Exploitability

The CVSS score of 4.8 reflects a moderate severity, while the EPSS score of less than 1% indicates a very low probability of exploitation at present. The vulnerability is not listed in the CISA KEV catalog. Exploitation requires local access or the ability to influence local input to the server, so remote attackers cannot leverage this flaw without first gaining local foothold. No publicly known remote exploitation has been documented.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

nanocoai

NanoClaw

affected

Version	Status	Constraints
`2.0.0`	affected	—
`2.0.1`	affected	—
`2.0.2`	affected	—
`2.0.3`	affected	—
`2.0.4`	affected	—
`2.0.5`	affected	—
`2.0.6`	affected	—
`2.0.7`	affected	—
`2.0.8`	affected	—
`2.0.9`	affected	—
`2.0.10`	affected	—
`2.0.11`	affected	—
`2.0.12`	affected	—
`2.0.13`	affected	—
`2.0.14`	affected	—
`2.0.15`	affected	—
`2.0.16`	affected	—
`2.0.17`	affected	—
`2.0.18`	affected	—
`2.0.19`	affected	—
`2.0.20`	affected	—
`2.0.21`	affected	—
`2.0.22`	affected	—
`2.0.23`	affected	—
`2.0.24`	affected	—
`2.0.25`	affected	—
`2.0.26`	affected	—
`2.0.27`	affected	—
`2.0.28`	affected	—
`2.0.29`	affected	—
`2.0.30`	affected	—
`2.0.31`	affected	—
`2.0.32`	affected	—
`2.0.33`	affected	—
`2.0.34`	affected	—
`2.0.35`	affected	—
`2.0.36`	affected	—
`2.0.37`	affected	—
`2.0.38`	affected	—
`2.0.39`	affected	—
`2.0.40`	affected	—
`2.0.41`	affected	—
`2.0.42`	affected	—
`2.0.43`	affected	—
`2.0.44`	affected	—
`2.0.45`	affected	—
`2.0.46`	affected	—
`2.0.47`	affected	—
`2.0.48`	affected	—
`2.0.49`	affected	—
`2.0.50`	affected	—
`2.0.51`	affected	—
`2.0.52`	affected	—
`2.0.53`	affected	—
`2.0.54`	affected	—
`2.0.55`	affected	—
`2.0.56`	affected	—
`2.0.57`	affected	—
`2.0.58`	affected	—
`2.0.59`	affected	—
`2.0.60`	affected	—
`2.0.61`	affected	—
`2.0.62`	affected	—
`2.0.63`	affected	—
`2.0.64`	affected	—

No data.

Vendor Product Confidence Versions

Nanocoai

Nanoclaw

90%

Version	Status	Scheme	Platform
`[2.0.0,2.0.64]`	affected	semver	—

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Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

Update NanoClaw to the latest version once the vendor releases a fix.
Enforce strict local access controls on the MCP Server Approval service, allowing only trusted users or service accounts to invoke chat‑SDK bridge operations.
Audit and monitor local access logs for unauthorized chat‑SDK bridge activity.

Generated by OpenCVE AI on August 3, 2026 at 18:17 UTC.

Tracking

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Advisories

No advisories yet.

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Local

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00103.

Exploitation poc

Automatable no

Technical Impact partial

References

Link	Providers
https://github.com/nanocoai/nanoclaw/
https://github.com/nanocoai/nanoclaw/issues/2761
https://vuldb.com/cve/CVE-2026-17433
https://vuldb.com/submit/862450
https://vuldb.com/vuln/383074
https://vuldb.com/vuln/383074/cti

History

Mon, 27 Jul 2026 23:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Sun, 26 Jul 2026 02:45:00 +0000

Type	Values Removed	Values Added
Description		A vulnerability was detected in nanocoai NanoClaw up to 2.0.64. This impacts the function createChatSdkBridge.setup of the file src/channels/chat-sdk-bridge.ts of the component MCP Server Approval. Performing a manipulation results in improper authorization. The attack needs to be approached locally. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.
Title		nanocoai NanoClaw MCP Server Approval chat-sdk-bridge.ts createChatSdkBridge.setup improper authorization
First Time appeared		Nanocoai Nanocoai nanoclaw
Weaknesses		CWE-266 CWE-285
CPEs		cpe:2.3:a:nanocoai:nanoclaw::::::::
Vendors & Products		Nanocoai Nanocoai nanoclaw
References		https://github.com/nanocoai/nanoclaw/ https://github.com/nanocoai/nanoclaw/issues/2761 https://vuldb.com/cve/CVE-2026-17433 https://vuldb.com/submit/862450 https://vuldb.com/vuln/383074 https://vuldb.com/vuln/383074/cti
Metrics		cvssV2_0 `{'score': 4.3, 'vector': 'AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR'}` cvssV3_0 `{'score': 5.3, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}` cvssV3_1 `{'score': 5.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}` cvssV4_0 `{'score': 4.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P'}`

Subscriptions

Nanocoai Nanoclaw

MITRE

Status: PUBLISHED

Assigner: VulDB

Published: 2026-07-26T02:30:09.678Z

Updated: 2026-07-27T20:23:47.697Z

Reserved: 2026-07-25T11:08:20.291Z

Link: CVE-2026-17433

Vulnrichment

Updated: 2026-07-27T17:25:37.843Z

NVD

Status : Deferred

Published: 2026-07-26T03:16:32.490

Modified: 2026-07-27T21:16:48.453

Link: CVE-2026-17433

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-08-03T18:30:06Z

Weaknesses

CWE-266
Incorrect Privilege Assignment
CWE-285
Improper Authorization

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Local

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

Exploitation poc

Automatable no

Technical Impact partial

Subscriptions

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