# Developing a minimally HashDoS resistant, yet quickly reversible integer hash for V8

DevFeed: [Developing a minimally HashDoS resistant, yet quickly reversible integer hash for V8](<https://devfeed.tech/articles/developing-a-minimally-hashdos-resistant-yet-quickly-reversible-integer-hash-for-v8-2895.md>)

Original publisher: [Read original article](<https://nodejs.org/en/blog/vulnerability/march-2026-hashdos>)

Published: 2026-03-24T20:50:00Z

Content type: article

Language: en

Sources: [Node.js Blog](<https://devfeed.tech/sources/node-js-blog.md>)

Topics: [V8](<https://devfeed.tech/topics/v8.md>), [Node.js](<https://devfeed.tech/topics/node-js.md>), [Security](<https://devfeed.tech/topics/security.md>), [Vulnerabilities](<https://devfeed.tech/topics/vulnerabilities.md>), [Server](<https://devfeed.tech/topics/server.md>), [Data structures](<https://devfeed.tech/topics/data-structures.md>), [JavaScript](<https://devfeed.tech/topics/javascript.md>)

Tags: [complexity](<https://devfeed.tech/tags/complexity.md>), [javascript](<https://devfeed.tech/tags/javascript.md>), [node-js](<https://devfeed.tech/tags/node-js.md>), [security](<https://devfeed.tech/tags/security.md>), [servers](<https://devfeed.tech/tags/servers.md>), [vulnerabilities](<https://devfeed.tech/tags/vulnerabilities.md>), [vulnerability](<https://devfeed.tech/tags/vulnerability.md>)

## AI overview

This article explains the design of an integer hash for V8 that aims to resist HashDoS attacks while remaining efficiently reversible by the runtime. It discusses CVE-2026-21717, string-hash implementation constraints, collision-driven performance degradation, statistical evaluation, and performance analysis in Node.js.

## Source excerpt

Node.js® is a free, open-source, cross-platform JavaScript runtime environment that lets developers create servers, web apps, command line tools and scripts.