T08 · Insecure Dependencies
- Location
references/p5js-courseware-guide.md:343- Finding
Unpinned Package Download and Execution via npx
- Content
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Vulnerability Details
File Location:
references/p5js-courseware-guide.md:343
Vulnerability Type: Unsafe third-party package retrieval and execution
Risk Level: MediumComplete Code Snippet:
markdown - If Node is unavailable, use `npx -y acorn` or the browser console for an equivalent syntax check.Technical Analysis
The validation workflow recommends executing
npx -y acornwithout specifying an audited package version or integrity value. Ifacornis not already available locally,npxcan retrieve the package and its dependency tree from the configured npm registry and execute it automatically. The-yoption suppresses the interactive confirmation that would otherwise alert the user to package installation.Because the resolved package version can change after this Skill has been reviewed, the effective code executed by the instruction is not fixed by the repository. A compromised npm publisher account, registry, package release, transitive dependency, or registry configuration could therefore cause attacker-controlled code to run during a routine syntax check.
No evidence was found that the current
acornpackage is malicious. The vulnerability is the unpinned, automatically approved dependency-execution pattern.Attack Path
- The Skill generates p5.js courseware and begins the prescribed syntax-validation workflow.
- The preferred local validation method is unavailable or the operator selects the documented fallback.
- The operator or Agent runs
npx -y acorn. npxresolves the current package from the configured npm registry without a repository lockfile, fixed version, or integrity requirement.- A compromised package release or dependency is downloaded and executed with the privileges of the invoking process.
- Malicious package code could access resources available to that user and process.
Impact Assessment
Exploitation could provide arbitrary code ...[truncated 540 chars]
- Remediation
View remediation
Remediation Suggestions
- Pin
acornto a specifically reviewed version rather than resolving the latest release:bash npx --yes acorn@<reviewed-version> - Prefer declaring the validator in
devDependencies, committing a lockfile, and installing with:bash npm ci - Invoke the locked local binary:
bash npx --no-install acorn - Configure npm integrity and provenance checks where supported, and use a trusted registry or internal package mirror.
- Run validation in a restricted container or sandbox without secrets, elevated privileges, or unnecessary filesystem and network access.
- Retain the browser-console alternative for environments where downloading dependencies is not explicitly authorized.
- Document the reviewed version and periodically reassess it for published security advisories before upgrading.
- Pin