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CVE-2026-90807— nanocoai NanoClaw Attachment agent-route.ts forwardAttachedFiles link following

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.

在 nanocoai NanoClaw 2.1.17 及更早版本中发现了一个漏洞。该问题影响了组件 Attachment Handler 中文件 里的函数 。 该漏洞的表现形式为链接跟随（link following），攻击者可从远程发起攻击。目前，利用方式已公开，存在被实际利用的风险。 修复该问题的补丁提交标识为 。建议实施该补丁以修复此漏洞。

CVSS 6.3 · Medium

Possible ATT&CK Techniques 1 AI

T1090 · Proxy

Affected Version Matrix 18

VendorProduct Version RangeStatus
nanocoai NanoClaw 2.1.0 affected
2.1.1 affected
2.1.2 affected
2.1.3 affected
2.1.4 affected
2.1.5 affected
2.1.6 affected
2.1.7 affected
… +10 more rows
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I. Basic Information for CVE-2026-90807

Vulnerability Information
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Vulnerability Title
nanocoai NanoClaw Attachment agent-route.ts forwardAttachedFiles link following
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in nanocoai NanoClaw up to 2.1.17. This issue affects the function forwardAttachedFiles of the file src/modules/agent-to-agent/agent-route.ts of the component Attachment Handler. The manipulation results in link following. The attack may be performed from remote. The exploit has been made public and could be used. The patch is identified as 3f9ed607b7e7a4872747295f75286f1c377d7c33. It is advisable to implement a patch to correct this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
nanocoai NanoClaw 2.1.0 cpe:2.3:a:nanocoai:nanoclaw:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-90807

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III. Intelligence Information for CVE-2026-90807

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Proof of Concept for CVE-2026-90807 (1)

Other References for CVE-2026-90807 (1)

IV. Related Vulnerabilities

Same product: NanoClaw
Same vendor: nanocoai
Same weakness: CWE-59

V. Comments for CVE-2026-90807

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