T09 · Insecure Skill Coding Practices
Warning
- Location
scripts/transcribe.sh:106- Finding
Incorrect curl End-of-Options Placement Can Expose the API Key and Break Requests
- Content
View full analysis
- Remediation
View remediation
Security audit
Deepgram Asr
Security checks for vulnerabilities and agentic risk
Overview
The skill matches its Deepgram transcription purpose, but it should be reviewed because its API call is constructed incorrectly and may mishandle the Deepgram API key.
Review or fix the curl command before installing. Only use this skill for audio you are comfortable sending to Deepgram, use a narrowly scoped Deepgram key with billing limits where possible, and rotate the key if this script has already been run in an environment where command errors or proxy logs may have captured arguments.
Vulnerability Patterns
- Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
- 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
Findings (1)
Vulnerability Patterns
- Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
- Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
- MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
- Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
- Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Findings (6)
External Script Fetching
High
- Category
- Supply Chain
- Confidence
- 90% confidence
- Finding
Remote code is downloaded and executed. This bypasses code review and could introduce malicious code.
- Content
sh trap 'rm -f "$tmpfile"' EXIT # Call API (-- prevents option injection from filenames starting with -) http_code=$(curl -sS -w '%{http_code}' -o "$tmpfile" -- "$url" \ -H "Authorization: Token $DEEPGRAM_API_KEY" \ -H "Content-Type: ${mime}" \ --data-binary "@${in}")
Undeclared Tool Scope
Medium
- Category
- MCP Least Privilege
- Confidence
- 89% confidence
- Finding
The skill advertises shell-based execution via a script but does not declare any explicit tool scope such as permissions or allowed-tools. That creates an avoidable trust and policy gap: an agent may invoke shell capabilities without a clear least-privilege contract, increasing the chance of unintended command execution or broader filesystem/network access than reviewers expect.
- Content
External Transmission
Medium
- Category
- Data Exfiltration
- Confidence
- 60% confidence
- Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
- Content
md esac # Build URL url="https://api.deepgram.com/v1/listen?model=${model}&smart_format=true&punctuate=true" if [[ -n "$language" ]]; then url="${url}&language=${language}" fi
External Transmission
Medium
- Category
- Data Exfiltration
- Confidence
- 60% confidence
- Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
- Content
sh esac # Build URL url="https://api.deepgram.com/v1/listen?model=${model}&smart_format=true&punctuate=true" if [[ -n "$language" ]]; then url="${url}&language=${language}" fi
Missing User Warnings
Medium
- Category
- Not specified by scanner
- Confidence
- 94% confidence
- Finding
The script uploads the provided audio file to Deepgram via an HTTP request, which transmits potentially sensitive user data off the local system. While this behavior is inferable from the script's purpose, there is no explicit confirmation prompt or user-facing disclosure near execution that the audio content will be sent to a third-party service.
- Content
External Transmission
Medium
- Category
- Data Exfiltration
- Confidence
- 70% confidence
- Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
- Content
sh trap 'rm -f "$tmpfile"' EXIT # Call API (-- prevents option injection from filenames starting with -) http_code=$(curl -sS -w '%{http_code}' -o "$tmpfile" -- "$url" \ -H "Authorization: Token $DEEPGRAM_API_KEY" \ -H "Content-Type: ${mime}" \ --data-binary "@${in}")