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Security audit

slack-e2e

Security checks for vulnerabilities and agentic risk

Overview

ClawScan marks this skill suspicious because Skillspector found two memory-poisoning patterns, though its review disagreed with both flags and the scan was partial.

Consider the suspicious verdict and incomplete scan before installing. The two reported patterns may be false positives, but several referenced paths were not included, so the available results cannot assess them.

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
  • Memory PoisoningPersistent Context Injection, Context Window Stuffing, Memory Manipulation
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (2)

Memory Manipulation

High
Category
Memory Poisoning
Confidence
80% confidence
Finding

Skill manipulates agent memory, state, or stored context. Memory corruption can alter personality, override safety rules, or cause unpredictable behavior.

Content

Scanner excerpt · user-oauth.md (reported line 98)May include surrounding context.

md
Cleanup deletes only the returned message ID in the leased channel and checks
that exact timestamp for absence. A rejected delete, failed readback, lost lease,
or ambiguous create is not a pass. Do not bulk-delete history, blindly replay a
write, or acquire a different credential to clean this run. Resolve current
lease authority and exact ownership with the pool owner first.

Context Window Stuffing

Medium
Category
Memory Poisoning
Confidence
80% confidence
Finding

Skill attempts to fill the context window with filler content, displacing legitimate instructions and safety constraints. This can degrade agent performance or bypass safety boundaries.

Content

Scanner excerpt · features.md (reported line 10)May include surrounding context.

md
## Native operations

| Method                                                             | Recipe and evidence                                                                                                                                                                                                                                                                    |
| ------------------------------------------------------------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `doctor()`                                                         | Same-lease identity/channel/Gateway readiness; capability matrix and advertised-scope diagnostics. It does not post a test message.