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[Learn how to use a CSP to prevent XSS](https://developer.chrome.com/docs/lighthouse/best-practices/csp-xss/)", "score": 1, "scoreDisplayMode": "informative", "details": { "type": "table", "headings": [ { "key": "description", "valueType": "text", "subItemsHeading": { "key": "description" }, "label": "Description" }, { "key": "directive", "valueType": "code", "subItemsHeading": { "key": "directive" }, "label": "Directive" }, { "key": "severity", "valueType": "text", "subItemsHeading": { "key": "severity" }, "label": "Severity" } ], "items": [ { "directive": "script-src", "description": "Host allowlists can frequently be bypassed. Consider using CSP nonces or hashes instead, along with `'strict-dynamic'` if necessary.", "severity": "High" } ] } }, "has-hsts": { "id": "has-hsts", "title": "Use a strong HSTS policy", "description": "Deployment of the HSTS header significantly reduces the risk of downgrading HTTP connections and eavesdropping attacks. 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", "nodeLabel": "Sponsorship does not equal influence. Mastodon is fully independent.", "explanation": "Fix any of the following:\n Element has insufficient color contrast of 2.77 (foreground color: #9b9b9b, background color: #ffffff, font size: 12.0pt (16px), font weight: normal). Expected contrast ratio of 4.5:1" }, "subItems": { "type": "subitems", "items": [ { "relatedNode": { "type": "node", "lhId": "1-10-BODY", "path": "1,HTML,1,BODY", "selector": "body.bg-white", "boundingRect": { "top": 0, "bottom": 10499, "left": 0, "right": 412, "width": 412, "height": 10499 }, "snippet": "
", "nodeLabel": "body.bg-white" } } ] } } ], "debugData": { "type": "debugdata", "impact": "serious", "tags": [ "cat.color", "wcag2aa", "wcag143", "TTv5", "TT13.c", "EN-301-549", "EN-9.1.4.3", "ACT", "RGAAv4", "RGAA-3.2.1" ] } } }, "definition-list": { "id": "definition-list", "title": "`