T08 · Insecure Dependencies
- Location
scripts/glucose.py:2- Finding
Unpinned Runtime Dependencies Expose Credentials and Health Data to Supply-Chain Risk
- Content
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Vulnerability Details
File Location:
scripts/glucose.py:2-5
Vulnerability Type:T08: Insecure Dependencies
Risk Level: Mediumpython # /// script # requires-python = ">=3.10" # dependencies = ["pydexcom", "fire"] # ///Technical Analysis
The script declares
pydexcomandfirewithout exact version constraints or package integrity hashes. The documented execution method usesuv run, which may resolve and install dependency versions at runtime.Because these dependencies execute in the same process as the Skill, their code can access
DEXCOM_USER,DEXCOM_PASSWORD, glucose readings, and all other resources available to the invoking user. If a future dependency release or its distribution channel is compromised, invoking the Skill could execute attacker-controlled package code without any change to the reviewed project.No evidence indicates that the currently named packages are malicious. The vulnerability is the absence of controls ensuring that users execute the specific dependency versions reviewed and approved by the project.
Attack Path
- An attacker compromises a future release or distribution path of an unpinned dependency.
- A user invokes the documented command, such as
uv run scripts/glucose.py now. - The package manager resolves and installs the compromised dependency version.
- Malicious package initialization or runtime code executes in the Skill process.
- That code reads the Dexcom credentials from the process environment, accesses returned glucose information, or performs other actions using the invoking user's permissions.
- The stolen information may be transmitted externally, or the compromised process may modify files and execute operations permitted to the user.
Impact Assessment
Successful exploitation could disclose Dexcom credentials and sensitive glucose measurements. Arbitrary dependency code would run with the privileges of the user ...[truncated 252 chars]
- Remediation
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Remediation Suggestions
- Pin each dependency to an exact, reviewed version rather than allowing unconstrained resolution.
- Generate and commit a lockfile that records the complete transitive dependency graph.
- Require package hashes or equivalent integrity verification where supported.
- Perform dependency updates through an explicit review process instead of resolving new versions during ordinary Skill execution.
- Run vulnerability and provenance checks against direct and transitive dependencies before approving updates.
- Execute the Skill with least privilege and expose only the environment variables required for Dexcom authentication.
- Consider isolating execution in a restricted environment with limited filesystem and network access to reduce the impact of a dependency compromise.