CVE-2026-17434

MEDIUM 6.3

nanocoai NanoClaw add_mcp_server request.ts handleAddMcpServer improper authorization

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-285 CWE-266
Vendor	nanocoai
Product	nanoclaw
Published	Jul 26, 2026

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CVSS v3 Breakdown

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

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

nanocoai / NanoClaw

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

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

🔍 Erichen-x (VulDB User)