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Security audit

neon-postgres-branches

Security checks for vulnerabilities and agentic risk

Overview

This skill gives clear, purpose-aligned guidance for creating and managing Neon database branches, with sensitive actions disclosed and user-confirmed.

Install this if you want agent assistance with Neon branching. Review branch reset commands carefully because they can replace child-branch data, and only allow .env updates when you are sure the new DATABASE_URL should be used by your local app or tests.

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
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
  • 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
Findings (3)

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 · SKILL.md (reported line 169)May include surrounding context.

neon branches reset <id|name> --parent --preserve-under-name --project-id

text

`--preserve-under-name` keeps the pre-reset state as a backup branch for rollback, but adds one extra branch to clean up later.

Optional context setup to avoid repeating `--project-id`:

Skill Enumeration

Medium
Category
Agent Snooping
Confidence
80% confidence
Finding

Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.

Content

Scanner excerpt · SKILL.md (reported line 19)May include surrounding context.

FIRST: Use the parent neon skill for a Neon overview, getting started with Neon, Neon development best practices, and more.

If the neon skill is not installed, fetch it from https://neon.com/docs/ai/skills/neon/SKILL.md or install it with:

bash
neon skills -s neon -y

Context-Inappropriate Capability

Medium
Category
Not specified by scanner
Confidence
96% confidence
Finding

The skill expands from branch selection/creation into editing local .env credentials, which is a separate sensitive capability with direct security implications. Changing DATABASE_URL can silently redirect an application, test suite, or deployment to a different database, risking accidental data exposure, writes to the wrong environment, or credential mishandling if the file is modified incorrectly.

Content

No source excerpt is available for this finding.

Static analysis

No suspicious patterns detected.