TC-2026-0034 · SKILLSSH · SKILL

[email protected]

Split-Brain Audit Case (#14 on skills.sh with 1.0M installs, 20 GitHub stars): stamped SAFE by Gen and 0 ALERTS by Socket, but fails Snyk W007 for instructing the user to paste third-party API keys directly into the LLM chat window.

Primary advisory (Snyk Agent Scan / threat.cafe Live Audit) Back to all 66 records

Signed ledger verdict

TC-2026-0034

Known bad (exit 2) skillssh:designed-by-ai/skills/design-mobile-apps

IOC & scope: skillssh:designed-by-ai/skills/design-mobile-apps (W007 credential prompt). Verified by human review and signed into the CC-BY 4.0 OSV v1.6.0 feed.

Credited finder: Snyk Agent Scan / threat.cafe Live Audit ↗
Recorded timestamp: 2026-10-25
Canonical SHA-256: 59c5be5c2c1d1300…
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. Filesystem
Sensitive paths touched: None observed
2. Environment
Variables harvested: SLEEK_API_KEY (prompted directly into LLM context window)
3. Network
Outbound egress domains: sleek.design/api/v1/*
4. Subprocess
Process execution primitives: None observed
5. Lifecycle
Install / startup hooks: None observed
6. OAuth / MCP
Declared scopes: None observed
7. Obfuscation
Encoding / steganography: None observed
8. Provenance
Attestation status: split_brain_scanner_conflict_w007

Governance & detector mapping

OWASP Agentic ASI (2026): ASI01 (Agent Goal Hijack), ASI03 (Identity & Privilege Abuse)
OWASP Agentic AST (2026): AST01 (Malicious MCP Servers), AST07 (Cross-Tool Privilege Escalation)
Deterministic rules matched: RULE_07_CREDENTIAL_PROMPT_HARVEST

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 "skillssh:designed-by-ai/skills/design-mobile-apps"
[threat.cafe] known_bad: skillssh:designed-by-ai/skills/design-mobile-apps (TC-2026-0034)
  Reason: Split-Brain Audit Case (#14 on skills.sh with 1.0M installs, 20 GitHub stars): stamped SAF
  Source: https://www.skills.sh/audits (credited to Snyk Agent Scan / threat.cafe Live Audit)

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-2026-0034",
  "modified": "2026-10-25T07:00:00Z",
  "published": "2026-10-25T07:00:00Z",
  "summary": "Split-Brain Audit Case (#14 on skills.sh with 1.0M installs, 20 GitHub stars): stamped SAFE by Gen and 0 ALERTS by Socket, but fails Snyk W007 for instructing the user to paste third-party API keys directly into the LLM chat window.",
  "affected": [
    {
      "package": {
        "ecosystem": "skillssh",
        "name": "designed-by-ai/skills/design-mobile-apps"
      },
      "versions": [
        "1.0.0"
      ]
    }
  ],
  "credits": [
    {
      "name": "Snyk Agent Scan / threat.cafe Live Audit",
      "type": "FINDER"
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.skills.sh/audits"
    },
    {
      "type": "WEB",
      "url": "https://threat.cafe/incidents/tc-2026-0034/"
    }
  ],
  "database_specific": {
    "target": "skillssh:designed-by-ai/skills/design-mobile-apps",
    "kind": "skill",
    "verdict": "known_bad",
    "ioc": "skillssh:designed-by-ai/skills/design-mobile-apps (W007 credential prompt)",
    "artifact_sha256": "59c5be5c2c1d13009fa36bdbd6b8223aecc9ead1b4b3c62a3ad484659eb1ecde",
    "owasp_asi": [
      "ASI01",
      "ASI03"
    ],
    "owasp_ast": [
      "AST01",
      "AST07"
    ],
    "rules_matched": [
      "RULE_07_CREDENTIAL_PROMPT_HARVEST"
    ],
    "abom": {
      "fs_sensitive": [],
      "env_harvest": [
        "SLEEK_API_KEY (prompted directly into LLM context window)"
      ],
      "net_egress": [
        "sleek.design/api/v1/*"
      ],
      "proc_exec": [],
      "install_hooks": [],
      "oauth_scopes": [],
      "obfuscation": [],
      "provenance": "split_brain_scanner_conflict_w007"
    },
    "license": "CC-BY-4.0",
    "record_digest": "sha256:6ed9052704e535e9da68bd6a63f2e290763e7ced56c96babe287121712978b75",
    "release_signature_url": "https://threat.cafe/feed.json.sig"
  }
}

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