CVE-2026-17434 - Vulnerability Details

- nanocoai NanoClaw add_mcp_server request.ts handleAddMcpServer improper authorization

Description

A flaw has been found in nanocoai NanoClaw up to 2.0.64. Affected is the function handleAddMcpServer of the file src/modules/self-mod/request.ts of the component add_mcp_server. Executing a manipulation can lead to improper authorization. The attack may be launched remotely. The exploit has been published and may be used. This patch is called e5b928783d5c485637565eb07d2967922dfbf8d8. A patch should be applied to remediate this issue.

Published: 2026-07-26

Score: 5.3 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

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

95%

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

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Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

Attack Vector Network

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 Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

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 0.00214.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/nanocoai/nanoclaw/
https://github.com/nanocoai/nanoclaw/commit/e5b928783d5c485637565eb07d2967922dfbf8d8
https://github.com/nanocoai/nanoclaw/issues/2762
https://github.com/nanocoai/nanoclaw/pull/2998
https://vuldb.com/cve/CVE-2026-17434
https://vuldb.com/submit/862451
https://vuldb.com/vuln/383075
https://vuldb.com/vuln/383075/cti

History

Sun, 26 Jul 2026 04:00:00 +0000

Type	Values Removed	Values Added
Description		A flaw has been found in nanocoai NanoClaw up to 2.0.64. Affected is the function handleAddMcpServer of the file src/modules/self-mod/request.ts of the component add_mcp_server. Executing a manipulation can lead to improper authorization. The attack may be launched remotely. The exploit has been published and may be used. This patch is called e5b928783d5c485637565eb07d2967922dfbf8d8. A patch should be applied to remediate this issue.
Title		nanocoai NanoClaw add_mcp_server request.ts handleAddMcpServer 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/commit/e5b928783d5c485637565eb07d2967922dfbf8d8 https://github.com/nanocoai/nanoclaw/issues/2762 https://github.com/nanocoai/nanoclaw/pull/2998 https://vuldb.com/cve/CVE-2026-17434 https://vuldb.com/submit/862451 https://vuldb.com/vuln/383075 https://vuldb.com/vuln/383075/cti
Metrics		cvssV2_0 `{'score': 6.5, 'vector': 'AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C'}` cvssV3_0 `{'score': 6.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C'}` cvssV3_1 `{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C'}` cvssV4_0 `{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/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: 2026-07-26T03:00:16.981Z

Updated: 2026-07-26T03:00:16.981Z

Reserved: 2026-07-25T11:08:25.395Z

Link: CVE-2026-17434

Vulnrichment

No data.

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-07-26T09:15:17Z

Weaknesses

Tracking

Attack Vector Network

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 Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

Subscriptions

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