CVE-2026-43989 PUBLISHED

JunoClaw: upload_wasm accepted arbitrary filesystem paths without validation

Assigner: GitHub_M
Reserved: 04.05.2026 Published: 12.05.2026 Updated: 12.05.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L
CVSS Score: 8.5

Attack Vector	Local	Scope	Changed
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	Required	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	Dragonmonk111
Product	junoclaw
Versions	Version < v0.x.y-security-1 is affected

References

Problem Types

CWE-20: Improper Input Validation CWE
CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE
CWE-59: Improper Link Resolution Before File Access ('Link Following') CWE
CWE-73: External Control of File Name or Path CWE