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CVE-2026-90809— HKUDS nanobot ExecTool shell.py ExecTool._spawn argument injection

Quick assessment

Affected
HKUDS nanobot
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.

在 HKUDS nanobot 版本 0.2.1 及之前版本中发现了安全漏洞。受影响的是位于文件 中 组件的 和 函数。该漏洞会导致参数注入，且攻击者可以远程发起攻击。修复该问题的补丁提交号为 。最佳实践是应用该补丁以解决此问题。

CVSS 7.3 · High

Affected Version Matrix 2

VendorProduct Version RangeStatus
HKUDS nanobot 0.2.0 affected
0.2.1 affected
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I. Basic Information for CVE-2026-90809

Vulnerability Information
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Vulnerability Title
HKUDS nanobot ExecTool shell.py ExecTool._spawn argument injection
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was identified in HKUDS nanobot up to 0.2.1. The affected element is the function ExecTool._guard_command/ExecTool._spawn of the file nanobot/agent/tools/shell.py of the component ExecTool. Such manipulation leads to argument injection. It is possible to launch the attack remotely. The name of the patch is af582246f141311d574551b7571a517bcc3df750. It is best practice to apply a patch to resolve this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
参数注入或修改
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
HKUDS nanobot 0.2.0 cpe:2.3:a:nanobot:nanobot:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-90809

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III. Intelligence Information for CVE-2026-90809

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Patches & Fixes for CVE-2026-90809 (2)

Proof of Concept for CVE-2026-90809 (1)

Other References for CVE-2026-90809 (1)

IV. Related Vulnerabilities

Same product: nanobot
Same vendor: HKUDS
Same weakness: CWE-88

V. Comments for CVE-2026-90809

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