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CVE-2026-43989— JunoClaw: upload_wasm accepted arbitrary filesystem paths without validation

Quick assessment

Affected
Dragonmonk111 junoclaw
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

JunoClaw是Dragonmonk111个人开发者的一个基于区块链的去中心化AI代理平台。 JunoClaw 0.x.y-security-1之前版本存在输入验证错误漏洞，该漏洞源于upload_wasm MCP工具接受代理提供的文件系统路径且未验证位置、符号链接目标、文件大小或格式，可能导致任意文件上传。

CVSS 8.5 · High EPSS 0.19% · P8

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 1

VendorProduct Version RangeStatus
Dragonmonk111 junoclaw < v0.x.y-security-1 affected
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I. Basic Information for CVE-2026-43989

Vulnerability Information
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Vulnerability Title
JunoClaw: upload_wasm accepted arbitrary filesystem paths without validation
Source: CVE Program / CVE List V5
Vulnerability Description
JunoClaw is an agentic AI platform built on Juno Network. Prior to 0.x.y-security-1, the upload_wasm MCP tool accepted a filesystem path from the agent and uploaded whatever bytes the path resolved to, with no validation of location, symlink target, file size, or file format. This vulnerability is fixed in 0.x.y-security-1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
JunoClaw 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
JunoClaw是Dragonmonk111个人开发者的一个基于区块链的去中心化AI代理平台。 JunoClaw 0.x.y-security-1之前版本存在输入验证错误漏洞，该漏洞源于upload_wasm MCP工具接受代理提供的文件系统路径且未验证位置、符号链接目标、文件大小或格式，可能导致任意文件上传。
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
Dragonmonk111 junoclaw < v0.x.y-security-1 -

II. Public POCs for CVE-2026-43989

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8198 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-43989

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Patches & Fixes for CVE-2026-43989 (1)

Vendor Advisories for CVE-2026-43989 (1)

Proof of Concept for CVE-2026-43989 (1)

Same Patch Batch · Dragonmonk111 · 2026-05-12 · 5 CVEs total

CVE-2026-43992 9.8 CRITICAL JunoClaw: MCP write tools exposed raw BIP-39 mnemonic as a tool-call parameter
CVE-2026-43991 8.4 HIGH JunoClaw: plugin-shell shell-injection bypass via substring blocklist
CVE-2026-43990 8.4 HIGH JunoClaw: plugin-shell shell-metacharacter injection via shell wrapper
CVE-2026-43993 8.2 HIGH JunoClaw: SSRF in WAVS computeDataVerify allows cloud-metadata and internal-service access

IV. Related Vulnerabilities

Same product: junoclaw
Same vendor: Dragonmonk111
Same weakness: CWE-20