CVE-2026-43989 HIGH

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

Vendor Dragonmonk111
Product junoclaw
Weakness CWE-20 · Input validation
Published May 12, 2026
Last update May 14, 2026
View on NVD All CVEs

CVSS base score

8.5/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 12, 2026 CVE published
May 14, 2026 Record updated