CVE-2026-34043

About vulnerability

Serialize JavaScript to a superset of JSON that includes regular expressions and functions. Prior to version 7.0.5, there is a Denial of Service (DoS) vulnerability caused by CPU exhaustion. When serializing a specially crafted “array-like” object (an object that inherits from Array.prototype but has a very large length property), the process enters an intensive loop that consumes 100% CPU and hangs indefinitely. This issue has been patched in version 7.0.5.

Affected product:

Next.js , Vue , astro , autodll-webpack-plugin , babel-loader , cache-loader , cli , file-loader , friendly-errors-webpack-plugin , nuxt , optimize-css-assets-webpack-plugin , progress-bar-webpack-plugin , serialize-javascript , terser-webpack-plugin , uglifyjs-webpack-plugin , webpack , webpack-dev-middleware , webpack-dev-server , webpack-subresource-integrity , webpackbar

Affected packages:

serialize-javascript (+79 more)

Serialize JavaScript to a superset of JSON that includes regular expressions and functions. Prior to version 7.0.5, there is a Denial of Service (DoS) vulnerability caused by CPU exhaustion. When serializing a specially crafted “array-like” object (an object that inherits from Array.prototype but has a very large length property), the process enters an intensive loop that consumes 100% CPU and hangs indefinitely. This issue has been patched in version 7.0.5.