Medium severity · published Jul 26, 2026
CVE-2026-17434
nanocoai NanoClaw add_mcp_server request.ts handleAddMcpServer improper authorization
6.3
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NA
NanoClaw · nanocoai
2.0.0; 2.0.1; 2.0.2; 2.0.3; 2.0.4; 2.0.5; +34 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-17434
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-17434
github.com
https://github.com/nanocoai/nanoclaw/
github.com
https://github.com/nanocoai/nanoclaw/commit/e5b928783d5c485637565eb07d2967922dfbf8d8
github.com
https://github.com/nanocoai/nanoclaw/issues/2762
github.com
https://github.com/nanocoai/nanoclaw/pull/2998
vuldb.com
https://vuldb.com/cve/CVE-2026-17434
vuldb.com
https://vuldb.com/submit/862451
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