T08 · Insecure Dependencies
- Location
SKILL.md:14- Finding
Unpinned Third-Party Dependencies Permit Unreviewed Package Code Execution
- Content
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Vulnerability Details
File Location:
SKILL.md, lines 14-16
Vulnerability Type: Unpinned third-party dependency installation
Risk Level: MediumVulnerable Code
bash uv add mss pillow # or pip install mss pillowTechnical Analysis
The documented installation commands resolve and install the latest compatible releases of
mss,pillow, and their applicable dependency chains without version constraints, integrity hashes, or a committed lockfile.Python package installation can execute package-controlled build or installation logic. Because the selected artifacts may change after this Skill has been reviewed, users cannot reliably reproduce the audited dependency set. A compromised package release, compromised package index, dependency confusion condition, or later vulnerable release could introduce code that was not present during the Skill audit.
No evidence indicates that the named packages are currently malicious. The risk arises from unconstrained future dependency resolution rather than from confirmed malicious behavior in the project.
Attack Path
- An attacker compromises a relevant package release, dependency, maintainer account, or configured package source.
- The attacker publishes a malicious or backdoored version that satisfies the unconstrained package request.
- A user follows the documented
uv add mss pilloworpip install mss pillowinstructions. - The package manager resolves the attacker-controlled artifact because no reviewed version or hash is required.
- Malicious package code executes during installation, build, or subsequent import with the privileges of the installing user.
Impact Assessment
Successful exploitation could execute arbitrary code under the installing user's account. Depending on that account's permissions, an attacker could read or modify accessible files, capture sensitive desktop content, access user-level credentials, install ...[truncated 558 chars]
- Remediation
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Remediation Suggestions
- Pin every direct dependency to a reviewed version rather than resolving an unrestricted latest release.
- Commit a dependency lockfile that includes the complete transitive dependency graph.
- Require cryptographic hashes for downloaded artifacts, such as through a hash-locked requirements file and
pip install --require-hashes. - Install only from an explicitly configured, trusted package index; disable unintended fallback indexes where dependency confusion is possible.
- Prefer prebuilt wheels from trusted sources and prevent unexpected source builds in controlled deployments.
- Run dependency vulnerability and provenance scanning in CI, and review dependency updates before modifying the lockfile.
- Perform installation and execution in a least-privileged virtual environment or sandbox without administrator rights.
- Document the supported Python version and platform so dependency resolution remains reproducible.