Description
Subresource Integrity (SRI) is a security feature that allows browsers to verify that resources fetched, such as from a content delivery network (CDN), are delivered without unexpected manipulation. It achieves this by enabling you to provide a cryptographic hash that the fetched resource must match.
Recommendation
To enhance security, add a base64-encoded hash of the resource in the value of the integrity attribute of the <script> or <link> element. You can obtain the hash from the resource provider or calculate it yourself. See references for details.
References
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- Handlebars.js has a Prototype Method Access Control Gap via Missing __lookupSetter__ Blocklist Entry - Vulnerability
- StableLib Ed25519 Signature Malleability via Missing S < L Check - Vulnerability
- Content-Security-Policy Header is Missing - Vulnerability
- Missing or Insecure Cache-Control Header - Vulnerability


