What’s Vulnerable › Vulnerabilities

CVE-2026-43992: JunoClaw: MCP write tools exposed raw BIP-39 mnemonic as a tool-call parameter

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-12 · updated 2026-10-26
• Weakness: CWE-200

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.

Affected products

• Dragonmonk111 junoclaw: before v0.x.y-security-1

References

• https://github.com/Dragonmonk111/junoclaw/commit/339701e
• https://github.com/Dragonmonk111/junoclaw/releases/tag/v0.x.y-security-1
• https://github.com/Dragonmonk111/junoclaw/security/advisories/GHSA-j75q-8xvm-6c48

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