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CVE-2026-56402— NanoClaw < 2.1.17 - Privilege Escalation via Unverified Approval Response Handler

Quick assessment

Affected
nanocoai nanoclaw
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

NanoCo NanoClaw是NanoCo组织的一个轻量级个人AI代理平台。 NanoCo NanoClaw 2.1.17之前版本存在授权问题漏洞，该漏洞源于handleApprovalsResponse函数未验证响应者角色授权，攻击者通过有效questionId提交批准响应有效载荷，可以批准或拒绝特权操作。

CVSS 6.5 · Medium EPSS 0.38% · P29

Affected Version Matrix 2

VendorProduct Version RangeStatus
nanocoai nanoclaw < 2.1.17 affected
2.1.17 unaffected
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I. Basic Information for CVE-2026-56402

Vulnerability Information
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Vulnerability Title
NanoClaw < 2.1.17 - Privilege Escalation via Unverified Approval Response Handler
Source: CVE Program / CVE List V5
Vulnerability Description
NanoClaw before 2.1.17 contains a privilege escalation vulnerability in the handleApprovalsResponse function that fails to verify responder role authorization. Attackers with a valid questionId can approve or reject privileged actions like package installation by submitting approval response payloads without proper role validation.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
NanoCo NanoClaw 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NanoCo NanoClaw是NanoCo组织的一个轻量级个人AI代理平台。 NanoCo NanoClaw 2.1.17之前版本存在授权问题漏洞，该漏洞源于handleApprovalsResponse函数未验证响应者角色授权，攻击者通过有效questionId提交批准响应有效载荷，可以批准或拒绝特权操作。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
nanocoai nanoclaw 0 ~ 2.1.17 -

II. Public POCs for CVE-2026-56402

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III. Intelligence Information for CVE-2026-56402

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Patches & Fixes for CVE-2026-56402 (2)

Vendor Advisories for CVE-2026-56402 (1)

Same Patch Batch · nanocoai · 2026-06-23 · 4 CVEs total

CVE-2026-56693 5.5 MEDIUM NanoClaw < 2.1.17 - Privilege Escalation via Unauthorized create_agent System Action
CVE-2026-56692 5.5 MEDIUM NanoClaw < 2.1.17 - Arbitrary File Read via Symlink Following in forwardAttachedFiles
CVE-2026-56694 5.4 MEDIUM NanoClaw < 2.1.0 - Privilege Escalation via Forged Channel Approval Callback

IV. Related Vulnerabilities

Same product: nanoclaw
Same vendor: nanocoai
Same weakness: CWE-862

V. Comments for CVE-2026-56402

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