Flask
PyPIflaskFlask is the most widely used Python microframework for web APIs and web applications. Its minimal core and extension ecosystem make it a common choice for small APIs, prototypes, and internal tools. Flask applications often run with elevated privileges or access to sensitive environment variables in production.
Checking Flask
flask 3.0.0 is a clean, monitored version with no known supply chain compromise. The example response returns supply_chain_monitored: true and compromised: false with an empty sources array.
curl "https://api.attestd.io/v1/check?product=flask&version=3.0.0" \
-H "Authorization: Bearer YOUR_API_KEY"{
"product": "flask",
"version": "3.0.0",
"supported": true,
"risk_state": "none",
"risk_factors": [],
"actively_exploited": false,
"remote_exploitable": false,
"authentication_required": false,
"patch_available": false,
"fixed_version": null,
"confidence": 0.9,
"cve_ids": [],
"cves": null,
"max_epss": null,
"typosquat": null,
"supply_chain_monitored": true,
"supply_chain": {
"compromised": false,
"sources": [],
"malware_type": null,
"description": null,
"advisory_url": null,
"compromised_at": null,
"removed_at": null
},
"last_updated": "2026-05-01T00:00:00Z"
}Why this package is monitored
Flask dispatches every request before route handlers or extensions run, often with access to production env vars. A hostile core can read bodies, cookies, and session data on that first hop.
Attestd monitors flask using the following detection sources:
registryManually curated advisories in the Attestd registry, verified by a human analyst. Confidence 1.0.
osvOSV.dev malicious-package advisories with IDs prefixed MAL-. Confidence 0.95.
pypi_yankVersions yanked on PyPI with a security-related yanked_reason annotation. Confidence 0.80.