by Kastro
Paper/Archive/CVE-2026-43992

CVE-2026-43992

Dragonmonk111 junoclaw — JunoClaw: MCP write tools exposed raw BIP-39 mnemonic as a tool-call parameter

EPSS 0.2%CVSS 9.8
critical.is priorityof 100
32
CVSS 9.8 (CNA)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 13.3.133 × 202.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
junoclaw< v0.x.y-security-1–CNA

Scores by source

GitHub_M (CNA)9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refgithub.com/Dragonmonk111/junoclaw/security/advisories/GHSA-j75q-8xvm-6c48refgithub.com/Dragonmonk111/junoclaw/commit/339701erefgithub.com/Dragonmonk111/junoclaw/releases/tag/v0.x.y-security-1