T08 · Insecure Dependencies
Warning
- Location
- SKILL.md:6
- Finding
- Execution of an Unpinned npm Package Using the Latest Version## Vulnerability Details **File Location**: `SKILL.md`, lines 6-22 **Vulnerability Type**: Unpinned third-party dependency execution **Risk Level**: Medium ### Vulnerable Code ```yaml allowed-tools: ["Bash(npx awal@latest status*)", "Bash(npx awal@latest balance*)", "Bash(npx awal@latest x402 pay *)"] ``` ```bash npx awal@latest status ``` ```bash npx awal@latest x402 pay <url> [-X <method>] [-d <json>] [-q <params>] [-h <json>] [--max-amount <n>] [--json] ``` ### Technical Analysis The Skill authorizes and instructs the Agent to invoke `awal@latest` through `npx`. The `latest` tag is mutable, so the package version executed at runtime can differ from the version that existed when the Skill was reviewed. The Skill does not pin a specific reviewed version, enforce a package integrity hash, or otherwise verify the downloaded package. Because `npx` can retrieve and execute the selected npm package, compromise of the package publisher account, registry distribution path, or a future malicious release could introduce arbitrary code without requiring changes to this repository. The code would execute with the operating-system permissions and environment available to the Agent process. ### Attack Path 1. An attacker compromises the npm package publisher or causes a malicious release to become the version referenced by the `latest` tag. 2. The Agent loads the Skill and runs an allowed command such as `npx awal@latest status`. 3. `npx` resolves and downloads the attacker-controlled package version. 4. Package lifecycle behavior or command implementation executes with the Agent process's local permissions. 5. The malicious package can access resources available to that process or manipulate wallet and payment operations. ### Impact Assessment Successful exploitation could permit arbitrary code execution within the privileges of the Agent process. Depending on the runtime environ ...[truncated 328 chars]
- Remediation
- ## Remediation Suggestions - Replace `awal@latest` with an exact, reviewed package version. - Record and verify the package integrity hash through a lockfile or equivalent trusted mechanism. - Configure npm to use only an approved registry and validate the expected package publisher and provenance. - Disable or strictly control package lifecycle scripts where operationally possible. - Install the reviewed dependency during a controlled build step rather than downloading executable code when the Skill is invoked. - Run the command in a sandbox with minimal filesystem, environment, wallet, and network access. - Establish a dependency update process requiring security review before changing the pinned version.