Node.js · Report #3846922

HTTP/2 retained header blocks evade maxSessionMemory and enable remote memory exhaustion

Validstatus

highseverity

12upvotes

28 Aug 2026disclosed

Summary

A flaw in Node.js HTTP/2 handling can cause HTTP/2 retained header blocks evade maxSessionMemory and enable remote memory exhaustion.

This vulnerability affects Node.js 24.x and 22.x.

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