T08 · Insecure Dependencies
- Location
SKILL.md:33- Finding
Unpinned Third-Party SDK Installation
- Content
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Vulnerability Details
File Location:
SKILL.md, lines 33–39
Vulnerability Type: Unpinned third-party dependencies
Risk Level: MediumVulnerable Code
bash # Python pip install nango # Node.js npm install @nangohq/node-clientThe installed Python SDK is subsequently imported and executed in
scripts/test_connection.py, including at lines 15–28:python from nango import Nango # Check environment secret_key = os.environ.get("NANGO_SECRET_KEY") if not secret_key: print("ERROR: NANGO_SECRET_KEY not set") print("Set it with: export NANGO_SECRET_KEY=your-key") return False nango = Nango() # Test connection providers = nango.list_providers()Technical Analysis
The installation instructions do not pin package versions or verify artifact integrity. Consequently, package managers resolve mutable versions from their configured registries at installation time. A future compromised, malicious, or unexpectedly incompatible package release could therefore execute code that was never reviewed as part of this Skill.
This is security-sensitive because
scripts/test_connection.pyimports and initializes the installed Python package in a process that containsNANGO_SECRET_KEY. The package is also expected to communicate with Nango and external services. Python modules may execute arbitrary code during import, while constructors and API methods provide additional execution opportunities.The reviewed repository does not itself contain a malicious dependency or payload. The risk arises from unsafe dependency acquisition and execution practices.
Attack Path
- A user follows
SKILL.mdand runspip install nangoornpm install @nangohq/node-client. - The package manager resolves the current package version from a configured registry without a lockfile, exact version, or integrity requirement defined by this project.
- An attacker compromises the relevant package, publishing account, registry, or dependency-re ...[truncated 1092 chars]
- A user follows
- Remediation
View remediation
Remediation Suggestions
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Pin every direct dependency to an exact, reviewed version rather than installing the latest mutable release:
bash pip install nango==REVIEWED_VERSION npm install @nangohq/node-client@REVIEWED_VERSION --save-exact -
Commit ecosystem-appropriate lockfiles, such as a hash-locked Python requirements file and
package-lock.json, to preserve transitive dependency resolution. -
For Python, use hash verification:
bash pip install --require-hashes -r requirements.txt -
Use package-manager integrity metadata and a trusted registry. Document the verified package owner, canonical package name, and expected registry to reduce dependency-confusion and typosquatting risk.
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Enable dependency vulnerability and provenance scanning in CI. Review upgrades before merging rather than automatically consuming new releases.
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Run the tester in an isolated virtual environment or container with minimal filesystem permissions and no unrelated environment variables.
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Inject only the credential required for the operation, use a least-privileged Nango key, and limit connected provider scopes.
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Restrict outbound network access where practical to approved Nango and provider endpoints, reducing the ability of compromised code to exfiltrate secrets.
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Rotate the Nango key immediately if an untrusted dependency version has already been executed with the key present.
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