Helmet
npmhelmetHelmet is an Express middleware that sets security-related HTTP response headers (Content-Security-Policy, HSTS, X-Frame-Options, and others). It is used to harden Express applications against common web vulnerabilities. It runs as middleware on every response.
Checking Helmet
helmet 8.0.0 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=helmet&version=8.0.0" \
-H "Authorization: Bearer YOUR_API_KEY"{
"product": "helmet",
"version": "8.0.0",
"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
Helmet is trusted to set CSP, HSTS, and related response headers on every Express response. Weakening those headers can allow hostile scripts or TLS downgrade without changing application routes.
Attestd monitors helmet 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.
npm_deprecationnpm package versions with deprecation messages containing targeted attack language such as malicious, backdoor, or compromised. Confidence 0.80.