T08 · Insecure Dependencies
- Location
SKILL.md:5- Finding
Unpinned Graphviz Dependencies Create a Supply-Chain Risk
- Content
View full analysis
Vulnerability Details
File Location:
SKILL.md:5-7,SKILL.md:413,SKILL.md:491,README.md:310,README.md:379
Vulnerability Type: Unpinned third-party dependency installation
Risk Level: MediumVulnerable Code
SKILL.md:5-7:yaml dependency: python: - graphviz>=0.20.1SKILL.md:413andSKILL.md:491:shell pip install graphviz apt-get install graphvizREADME.md:310andREADME.md:379:shell pip install graphvizTechnical Analysis
The project declares
graphviz>=0.20.1and instructs users or agents to installgraphvizwithout an exact version, package hash, lockfile, or explicit trusted package repository. The lower-bound constraint permits any future package version, whilepip install graphviznormally resolves the latest compatible release available from the configured package index.Consequently, the dependency installed during one execution may differ from the dependency reviewed during the audit. If the configured repository, package publisher account, package artifact, dependency resolution process, or local package-index configuration is compromised, attacker-controlled code could be introduced through the installation workflow.
The
apt-get install graphvizinstruction also modifies the host environment and may be executed with elevated privileges depending on the operating environment. No malicious dependency or compromised repository was identified during this audit; the vulnerability is the unsafe and non-reproducible dependency acquisition process.Attack Path
- An attacker compromises a relevant package release, publisher account, configured package repository, mirror, or dependency-resolution environment.
- A user or agent activates the Skill and follows its prerequisite installation instructions.
pip install graphvizor the non-exactgraphviz>=0.20.1constraint resolves an artifact that was n ...[truncated 1178 chars]
- Remediation
View remediation
Remediation Suggestions
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Replace the lower-bound dependency with an exact, reviewed version:
yaml dependency: python: - graphviz==0.20.3The exact version should be selected after compatibility and security review.
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Maintain a lockfile or requirements file containing cryptographic hashes:
text graphviz==0.20.3 --hash=sha256:<verified-package-hash> -
Install dependencies with hash enforcement:
shell python -m pip install --require-hashes -r requirements.txt -
Explicitly use an approved package repository or internally controlled mirror, and ensure package-index configuration cannot silently redirect resolution to an untrusted source.
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Pin the operating-system Graphviz package to an approved repository version where operationally practical. Verify repository signatures and metadata before installation.
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Do not automatically perform privileged package installation. Request explicit user approval before changing the host environment, and prefer an isolated virtual environment or container with minimal privileges.
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Add automated dependency scanning and scheduled review of pinned versions so security updates can be adopted deliberately without allowing unreviewed versions to be installed automatically.
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