T08 · Insecure Dependencies
- Location
SKILL.md:7- Finding
Execution of Unpinned Third-Party Repository Code
- Content
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Vulnerability Details
File Location:
SKILL.md, lines 7–11
Vulnerability Type: Unpinned and unverified third-party dependency execution
Risk Level: MediumVulnerable Code:
bash git clone https://github.com/FroeMic/toggl-cli cd toggl-cli npm install npm run build npm linkTechnical Analysis
The installation instructions clone the current state of a third-party Git repository without pinning a reviewed commit or immutable release. They then execute npm installation and build operations against that mutable source.
npm installmay execute package lifecycle scripts from the cloned repository or its transitive dependencies.npm run buildexplicitly executes repository-controlled code. Finally,npm linkexposes the resulting executable globally within the user's npm environment. Consequently, the code executed during installation can differ from the code originally reviewed with this Skill.This constitutes a supply-chain risk rather than evidence that the current upstream repository is malicious. The vulnerability arises because the instructions provide no version pinning, integrity verification, dependency provenance validation, or isolation boundary before executing externally controlled code.
Attack Path
- An attacker compromises the referenced GitHub account, repository, release process, or a transitive npm dependency.
- The attacker adds malicious lifecycle, build, or runtime code.
- A user follows the Skill's instructions and clones the mutable default branch.
npm installornpm run buildexecutes the attacker-controlled code with the user's local privileges.- The malicious code reads accessible files or environment variables, potentially including
TOGGL_API_TOKEN. npm linkmakes the attacker-controlledtogglexecutable available globally, allowing subsequent legitimate-looking invocations to continue running the modified implementation.
Impa
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- Remediation
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Remediation Suggestions
- Pin the repository to a reviewed, immutable commit hash rather than cloning and executing the mutable default branch.
- Prefer a signed and versioned release from a trusted distribution channel.
- Publish and verify cryptographic checksums or signatures for the reviewed source and release artifacts.
- Commit and review the dependency lockfile, then use
npm ciinstead ofnpm installto enforce exact dependency versions. - Audit package lifecycle scripts and consider initially installing with
--ignore-scripts, enabling only explicitly reviewed scripts when required. - Run installation and builds in an isolated, minimally privileged environment without unrelated credentials in its environment.
- Avoid
npm linkwhere possible. Install a pinned package version into a dedicated environment or invoke a verified local binary explicitly. - Restrict
TOGGL_API_TOKENexposure to processes that require it, rather than making it broadly available during installation or build operations. - Document a verification and update process so each new upstream revision is reviewed before users execute it.