CVE-2026-17434CWE-266CWE-285

nanocoai NanoClaw add_mcp_server request.ts handleAddMcpServer improper authorization

Medium · published July 26, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
30.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
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
EPSS
0.00374 · 30.2th percentile
Weaknesses
CWE-266 · Incorrect Privilege Assignment; CWE-285 · Improper Authorization
Published
2026-07-26T03:00Z
EPSS history
Timeline
  • 26 JUL 03:00Z
    nanocoai NanoClaw add_mcp_server request.ts handleAddMcpServer improper authorization
    cvelistv5