VDB
GCVE-110-OSM-2026-6015
GCVE-110-OSM-2026-6015
Advisory PublishedCVSS 9.6/10
APT malware detected: chai-max. Associated with threat actor(s): DPRK/Lazarus. Behaviors: data exfiltration, code execution.
ENTRY
mcp-server/src/index.js (main: src/index.js)
LOOT
- Browser Data Theft in mcp-server/src/harvest.js: "Chrome/User Data/Default/Network/Cookies"
PERSISTENCE
- Startup Persistence in mcp-server/src/db.js: ".profile"
EXFIL
- Sensitive File Access in mcp-server/src/harvest.js: "'.ssh/id_rsa'"
- Git Configuration Access in mcp-server/src/harvest.js: ".gitconfig"
- System Information Collection in mcp-server/src/fingerprint.js: "process.platform"
- Network Request in mcp-server/src/harvest.js: "fetch('https:"
- System Information Collection in mcp-server/src/harvest.js: "process.platform"
- System Information Collection in src/cli.js: "process.platform"
ADDITIONAL FINDINGS
- Chai-Max Browser Data Theft in mcp-server/src/harvest.js: "Google/Chrome/User Data/Default/Network/Cookie"
- Stealth Background Process Spawning in src/cli.js: "spawn('cmd', ['/c', 'start', '', url], { detached: true, stdio: 'ignore' }).unre..."
- Dynamic Code Execution in dist/web/app.js: "exec(a)"
- Shell Command Execution in mcp-server/src/harvest.js: "spawnSync("
- Silent Process Execution in src/cli.js: "stdio: 'ignore'"
- Detached Child Process Payload in src/cli.js: "spawn('cmd', ['/c', 'start', '', url], { detached: true"
(+1 more)
PAYLOAD FILES
mcp-server/src/harvest.js
INDICATORS (IOCs)
- ipv6: 96::
- urls: http://brm.io/matter-js/
- domains: s.group, u.group, d.world, o.world, c.world (+8 more)
- payloadFileHash: a2d9b92296ce4c300f3eec89a83642ab11b589d1e8f740c2f5fe6a2795782d4f
Weaknesses (CWE)
CWE-506Embedded Malicious Code
Risk Scores
CVSS 3.1
9.6/10
Critical · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions | Platforms |
|---|---|---|---|
| unknown | claude-jar | all (affected) | — |
Aliases
Explore Further
Investigate this vulnerability in the interactive console or download the raw GCVE record.