T08 · Insecure Dependencies
- Location
requirements.txt:5- Finding
Unpinned Python Dependencies Permit Unreviewed Supply-Chain Changes
- Content
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Vulnerability Details
File Location:
requirements.txt:5-6
Vulnerability Type: Unpinned third-party dependencies
Risk Level: MediumComplete Code Snippet:
text jsonschema>=4.0 PyYAML>=5.1Technical Analysis
The project specifies only minimum versions for
jsonschemaandPyYAML. Consequently, the documented installation command resolves and installs whichever compatible releases are current at installation time. There is no lock file, exact version constraint, or package hash to ensure that maintainers and automation execute the same reviewed dependency artifacts.This does not establish that either dependency is currently malicious. The security weakness is that the effective executable dependency set can change after the Skill itself has been reviewed. A compromised upstream release, account takeover, or unexpectedly incompatible future version could therefore introduce code that executes during import or normal script operation.
Attack Path
- An attacker compromises an accepted dependency release or its upstream publishing account.
- The attacker publishes a version satisfying
jsonschema>=4.0orPyYAML>=5.1. - A maintainer follows the documented
python -m pip install -r requirements.txtcommand inREADME.md. - The package resolver selects the compromised compatible release.
- Attacker-controlled package code executes during installation, import, or use by the project scripts.
Impact Assessment
Compromised dependency code would run with the privileges of the user or automation process installing and invoking the Skill's maintenance scripts. Depending on that environment, it could read project files and accessible environment variables, modify repository content, tamper with generated evidence, or make network requests. This issue does not itself grant elevated operating-system privileges; its scope is limited to the permissions already held by the a ...[truncated 16 chars]
- Remediation
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Remediation Suggestions
- Pin each direct dependency to a reviewed exact version.
- Generate a lock file that also fixes transitive dependency versions.
- Record cryptographic hashes and install with pip's
--require-hashesoption. - Update dependencies through reviewed pull requests with automated vulnerability and license checks.
- Rebuild and test the lock file in a clean environment before release.
- Where practical, install dependencies in an isolated virtual environment with no unnecessary credentials or repository write access.