TC-2026-0003 · NPM · MCP

@iflow-mcp/[email protected]

GlassWorm campaign clone of WaterCrawl MCP server embedding invisible Unicode Variation Selectors (U+FE00-U+FE0F) decoded via eval() and Solana memo C2 dead-drops.

Primary advisory (Koi Security) Back to all 66 records

Signed ledger verdict

TC-2026-0003
Known bad (exit 2) npm:@iflow-mcp/[email protected]

IOC & scope: npm:@iflow-mcp/[email protected]. Verified by human review and signed into the CC-BY 4.0 OSV v1.6.0 feed.

Credited finder
Koi Security ↗
Recorded timestamp
2026-03-19
Canonical SHA-256
d89fba4e79c99d63…
Local hook action
Block (exit 2)
Run live in Counter Workbench

Signed in /feed.json (.sig).

01 8-Vector Capability X-Ray (ABOM) & OWASP Agentic Crosswalk

Deterministic capability profile and taxonomy mapping.

Every artifact in the threat.cafe ledger is profiled across eight execution vectors and mapped to the OWASP Top 10 for Agentic Applications (ASI01-ASI10) and Agentic Skills & Tools (AST01-AST10).

8-Vector Capability X-Ray (ABOM)

  1. 1. Filesystem
    Sensitive paths touched: ~/.cursor/mcp.json, ~/.claude.json, ~/.gitconfig
  2. 2. Environment
    Variables harvested: process.env.*
  3. 3. Network
    Outbound egress domains: api.mainnet-beta.solana.com:443
  4. 4. Subprocess
    Process execution primitives: eval(Buffer.from(...))
  5. 5. Lifecycle
    Install / startup hooks: None observed
  6. 6. OAuth / MCP
    Declared scopes: None observed
  7. 7. Obfuscation
    Encoding / steganography: unicode_variation_selectors_fe00_fe0f, invisible_zero_width_joiner
  8. 8. Provenance
    Attestation status: typosquat_clone

Governance & detector mapping

  1. OWASP Agentic ASI (2026): ASI02 (Tool Misuse & Exploitation), ASI04 (Agentic Supply Chain Vulnerabilities), ASI05 (Unexpected Code Execution (RCE))
  2. OWASP Agentic AST (2026): AST01 (Malicious MCP Servers), AST04 (Covert Channel Exfiltration)
  3. Deterministic rules matched: RULE_01_GLASSWORM_UNICODE, RULE_05_PROMPT_EXFIL_SHELL

Version scoping & related records

  • No other versions of this package are currently listed on the board. Unlisted versions evaluate to unknown under local policy.yml.

Local CLI verification

$ threat-cafe-hook check "npm:@iflow-mcp/[email protected]"
[threat.cafe] known_bad: npm:@iflow-mcp/[email protected] (TC-2026-0003)
  Reason: GlassWorm campaign clone of WaterCrawl MCP server embedding invisible Unicode Variation Se
  Source: https://thehackernews.com/2026/03/glassworm-malware-uses-solana-dead.html (credited to Koi Security)

OSV v1.6.0 machine-readable record

Included in /feed.json under CC-BY 4.0 license and verified by /feed.json.sig.

{
  "schema_version": "1.6.0",
  "id": "TC-2026-0003",
  "modified": "2026-03-19T14:30:00Z",
  "published": "2026-03-19T14:30:00Z",
  "summary": "GlassWorm campaign clone of WaterCrawl MCP server embedding invisible Unicode Variation Selectors (U+FE00-U+FE0F) decoded via eval() and Solana memo C2 dead-drops.",
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@iflow-mcp/watercrawl-watercrawl-mcp"
      },
      "versions": [
        "1.3.4"
      ]
    }
  ],
  "credits": [
    {
      "name": "Koi Security",
      "type": "FINDER"
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://thehackernews.com/2026/03/glassworm-malware-uses-solana-dead.html"
    },
    {
      "type": "WEB",
      "url": "https://threat.cafe/incidents/tc-2026-0003/"
    }
  ],
  "database_specific": {
    "target": "npm:@iflow-mcp/[email protected]",
    "kind": "mcp",
    "verdict": "known_bad",
    "ioc": "npm:@iflow-mcp/[email protected]",
    "artifact_sha256": "d89fba4e79c99d635f1013ad05b6f4ee03ee6a9ddab2e87c9aeab20a2f72a484",
    "owasp_asi": [
      "ASI02",
      "ASI04",
      "ASI05"
    ],
    "owasp_ast": [
      "AST01",
      "AST04"
    ],
    "rules_matched": [
      "RULE_01_GLASSWORM_UNICODE",
      "RULE_05_PROMPT_EXFIL_SHELL"
    ],
    "abom": {
      "fs_sensitive": [
        "~/.cursor/mcp.json",
        "~/.claude.json",
        "~/.gitconfig"
      ],
      "env_harvest": [
        "process.env.*"
      ],
      "net_egress": [
        "api.mainnet-beta.solana.com:443"
      ],
      "proc_exec": [
        "eval(Buffer.from(...))"
      ],
      "install_hooks": [],
      "oauth_scopes": [],
      "obfuscation": [
        "unicode_variation_selectors_fe00_fe0f",
        "invisible_zero_width_joiner"
      ],
      "provenance": "typosquat_clone"
    },
    "license": "CC-BY-4.0",
    "record_digest": "sha256:ea874bb6ce2f5f7bdc630e9f72ac4cfca165bcf64f8148a26dec4703c9de71f2",
    "release_signature_url": "https://threat.cafe/feed.json.sig"
  }
}

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