CVE-2026-43992
CRITICALJunoClaw: MCP write tools exposed raw BIP-39 mnemonic as a tool-call parameter
Title source: cnaDescription
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.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/Dragonmonk111/junoclaw/security/advisories/GHSA-j75q-8xvm-6c48
X_Refsource_Misc x_refsource_misc
https://github.com/Dragonmonk111/junoclaw/commit/339701e
X_Refsource_Misc x_refsource_misc
https://github.com/Dragonmonk111/junoclaw/releases/tag/v0.x.y-security-1
Scores
CVSS v3
9.8
EPSS
0.0022
EPSS Percentile
13.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
total
Details
CWE
CWE-200
CWE-312
CWE-522
CWE-532
Status
published
Products (1)
Dragonmonk111/junoclaw
< v0.x.y-security-1
Published
May 12, 2026
Tracked Since
May 12, 2026