CVE-2026-43992 Details
Description
JunoClaw is an agentic AI platform built on Juno Network. Prior to 0.x.y-security-1, every MCP write tool (send_tokens, execute_contract, instantiate_contract, upload_wasm, ibc_transfer, etc.) accepted 'mnemonic: string' as an explicit tool-call parameter. The BIP-39 seed was consequently embedded in the LLM tool-call JSON, exposing it to any transport, log, or telemetry surface in the path between the LLM provider and the MCP process. This vulnerability is fixed in 0.x.y-security-1.
A vulnerability in JunoClaw's Cosmos MCP write tools allowed the BIP-39 mnemonic to be passed as a raw string parameter, which was then embedded in the tool-call JSON. This exposure could be intercepted through any transport, log, or telemetry between the LLM provider and the MCP process, potentially leading to unauthorized access to the mnemonic seed. The issue has been addressed by replacing the mnemonic parameter with a 'wallet_id' handle, which is now managed through a secure wallet registry. This registry encrypts the mnemonic and stores it as a 32-byte data-encryption key, accessible only during a single signing session. The vulnerability affected JunoClaw versions prior to 0.3.0.
The vulnerability has been fixed in JunoClaw version 0.3.0. Users should update to this version or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed May 12, 2026CISA-ADP
Assessed May 13, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/Dragonmonk111/junoclaw/commit/339701e | [email protected] | Source CodeVendor |
| https://github.com/Dragonmonk111/junoclaw/releases/tag/v0.x.y-security-1 | [email protected] | Release NotesVendor |
| https://github.com/Dragonmonk111/junoclaw/security/advisories/GHSA-j75q-8xvm-6c48 | [email protected] | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-200 | Exposure of Sensitive Information to an Unauthorized Actor | [email protected] |
| CWE-312 | Cleartext Storage of Sensitive Information | [email protected] |
| CWE-522 | Insufficiently Protected Credentials | [email protected] |
| CWE-532 | Insertion of Sensitive Information into Log File | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| JunoClaw | All versions |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| May 12, 2026 | New CVE Received | [email protected] |