JunoClaw: MCP write tools exposed raw BIP-39 mnemonic as a tool-call parameter
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-200.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Dragonmonk111 | junoclaw | before v0.x.y-security-1 | v0.x.y-security-1 | Patch available | CNA |
- junoclaw VendorDragonmonk111 Affected before v0.x.y-security-1 Fixed in v0.x.y-security-1 Patch available CNA
Remediation
- Fix · CNA junoclaw (Dragonmonk111) Fixed in v0.x.y-security-1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-43992
References
More Dragonmonk111 vulnerabilities
- TI-2026-32034 JunoClaw: plugin-shell shell-injection bypass via substring blocklist CVSS 3.1HIGH 8.4
- TI-2026-32033 JunoClaw: plugin-shell shell-metacharacter injection via shell wrapper CVSS 3.1HIGH 8.4
- TI-2026-32032 JunoClaw: upload_wasm accepted arbitrary filesystem paths without validation CVSS 3.1HIGH 8.5
- TI-2026-32036 JunoClaw: SSRF in WAVS computeDataVerify allows cloud-metadata and internal-service access CVSS 3.1HIGH 8.2
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences