CVE-2026-21710

CVE-2026-21710 — Node.js req.headersDistinct DoS Summary...

BIT-NODE-2026-21710

A flaw in Node.js HTTP request handling causes an uncaught TypeError when a request is received with a header named proto and the application accesses req.headersDistinct. When this occurs, dest"proto" resolves to Object.prototype rather than undefined, causing .push to be called on a non-array...

AZL-81239 CVE-2026-21710 affecting package nodejs for versions less than 20.14.0-15

A flaw in Node.js HTTP request handling causes an uncaught TypeError when a request is received with a header named proto and the application accesses req.headersDistinct. When this occurs, dest"proto" resolves to Object.prototype rather than undefined, causing .push to be called on a non-array...