T08 · Insecure Dependencies
- Location
README.md:163- Finding
Unpinned Third-Party Package and Browser Binary Installation
- Content
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Vulnerability Details
File Location:
README.md, lines 163-170
Vulnerability Type: Unpinned and unverifiable third-party dependencies
Risk Level: MediumVulnerable Code
bash # Use uv to create a virtual environment uv venv source .venv/bin/activate # Install dependencies uv pip install playwright playwright install chromiumTechnical Analysis
The installation instructions retrieve Playwright without specifying an exact reviewed version, a lock file, or package hashes. They then use the resolved Playwright package to download a corresponding Chromium executable without documenting or verifying the expected browser revision or artifact checksum.
As a result, the repository does not fully determine which third-party code and browser executable users will install. Installation behavior may change over time as upstream releases change. The effective trust boundary therefore extends beyond the audited project to the configured Python package index, the selected Playwright release, and Playwright's browser-distribution infrastructure.
This is a supply-chain weakness rather than evidence that the current Playwright or Chromium packages are malicious.
Attack Path
- A user installs the Skill and follows the setup commands in
README.md. uv pip install playwrightresolves the latest compatible Playwright package from the user's configured package index.- An attacker who compromises the upstream package, distribution account, package index, or dependency-delivery path causes a malicious or altered release to be selected.
- The package is installed into the virtual environment with the user's permissions.
playwright install chromiumdownloads an external browser executable selected by that unpinned package version.- The installed package or downloaded executable runs when the scraper is invoked, allowing malicious code to execute under the account running the Skill.
Impact Assessment
Successful exploitation ...[truncated 539 chars]
- A user installs the Skill and follows the setup commands in
- Remediation
View remediation
Remediation Suggestions
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Pin Playwright to an exact, reviewed version instead of resolving a mutable latest version.
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Commit a dependency lock file containing cryptographic hashes and require frozen installation, for example:
bash uv sync --frozen -
Define the dependency in a managed project file and generate the lock file through a controlled release process.
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Document the expected Chromium revision associated with the pinned Playwright version.
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Verify downloaded browser artifacts using vendor-provided checksums or signatures where supported.
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Use a trusted or internally controlled package index for higher-assurance deployments.
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Run dependency installation and browser automation in a least-privileged container or sandbox with restricted filesystem and credential access.
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Add automated dependency scanning and review dependency updates before regenerating the lock file.
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