ClawHub
Back to skill

Security audit

Audio and Video Workbench

Security checks for vulnerabilities and agentic risk

Overview

The skill performs the disclosed local media tasks, with optional model downloads and ordinary dependency installation risks.

Use a dedicated environment and reviewed dependency versions. Enable model downloads only when wanted, allow space for retained models and transcripts, and review generated captions before sharing.

A.I.G

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • Behavioral ASTexec() Call, eval() Call, Dynamic Import
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
Findings (7)

MCP server referenced without pinned version: 'npx clawhub'.

Medium
Category
MCP Rug Pull
Confidence
94% confidence
Finding

The documented command uses npx clawhub@latest, which can download and execute a mutable npm package version with the invoking user's permissions. A compromised future release could execute malicious code during installation; this is a legitimate installation example rather than a covert execution instruction, and the referenced tool is a CLI, not an MCP server, but the unpinned dependency risk remains.

Content

No source excerpt is available for this finding.

MCP server referenced without pinned version: 'npx clawhub'.

Medium
Category
MCP Rug Pull
Confidence
94% confidence
Finding

The documented command uses npx clawhub@latest, which can download and execute a changing CLI release rather than a reviewed, pinned version. Although this is an installation CLI rather than an MCP server, the underlying supply-chain risk is real: a compromised future release could execute with the user's permissions and access workspace files; nothing in the supplied README indicates malicious intent.

Content

No source excerpt is available for this finding.

Skill declares no tool scope ('permissions' or 'allowed-tools') but code capabilities were detected: env, file_read, file_write, shell.

Medium
Category
MCP Least Privilege
Confidence
70% confidence
Finding

Without declared permissions the skill's intent is opaque and cannot be validated.

Content

No source excerpt is available for this finding.

subprocess module call

Medium
Category
Dangerous Code Execution
Confidence
70% confidence
Finding

subprocess module calls execute external commands. Without careful input validation, this enables command injection.

Content

Scanner excerpt · scripts/run.py (reported line 21)May include surrounding context.

python
args=list(args)
 if '-protocol_whitelist' in args:
  idx=args.index('-i');args[idx:idx]=['-format_whitelist','mov,mp4,m4a,3gp,3g2,mj2,matroska,webm,mp3,wav,flac,ogg,aac']
 p=subprocess.run([ffmpeg(),'-hide_banner','-nostdin','-loglevel','error','-n',*map(str,args)],stdin=subprocess.DEVNULL,capture_output=True,timeout=timeout)
 require(p.returncode==0,'FFmpeg failed: '+p.stderr.decode('utf8','replace')[-1200:]);return p

def probe(p):

Dynamic import via __import__()

Medium
Category
Dangerous Code Execution
Confidence
75% confidence
Finding

Dynamic import() can load arbitrary modules at runtime, bypassing static analysis and potentially importing malicious code.

Content

Scanner excerpt · scripts/run.py (reported line 69)May include surrounding context.

python
model_file=read_file(ws,str(folder/name),750*1024*1024);sources.append(source(ws,model_file));hashes.append(digest(model_file))
   model_fingerprint=hashlib.sha256(''.join(hashes).encode()).hexdigest()
  model=WhisperModel(model_ref,device='cpu',compute_type='int8',cpu_threads=threads,download_root=str(model_root),local_files_only=not j.get('allowModelDownload',False))
  cachekey=hashlib.sha256(json.dumps({'source':sources[0]['sha256'],'model':model_fingerprint,'language':lang,'engine':__import__('faster_whisper').__version__,'chunkSeconds':chunk,'decoder':'beam1-v1'},sort_keys=True).encode()).hexdigest()
  segments=[];reused=0
  for index,start in enumerate(range(0,math.ceil(duration),chunk)):
   end=min(start+chunk,duration);part=safe(ws,str(cache/(cachekey+'-'+str(index)+'.json')),False)

Scope Creep

Low
Category
Excessive Agency
Confidence
70% confidence
Finding

Skill's behavior or capabilities extend beyond its stated purpose. Scope creep allows an agent to perform actions unrelated to its documented functionality, increasing the attack surface.

Content

Scanner excerpt · LICENSE (reported line 7)May include surrounding context.

text
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Unverifiable Dependency: Pillow has 194 known advisory(ies) (CVE-2026-112390 (Pillow: Infinite loop in MIC n_frames when the embedded TIFF); CVE-2026-96638 (Pillow: BMP RLE decoder memory-amplification DoS via unbounded delta escape / ab); CVE-2026-112391 (Pillow: PdfParser can recurse without limit in get_value() and linearize_page_tr) +191 more), but the manifest does not pin a version, so it is unknown whether the installed release is affected

Low
Category
Supply Chain
Confidence
40% confidence
Finding

OSV returned advisories for this package, but its resolved version is unknown. A package-name lookup does not establish whether the installed release is affected by those advisories.

Content

No source excerpt is available for this finding.