A flaw in Node.js allows a spoofed `TypedArray` `byteLength` to trigger a reachable assertion in the synchronous `node:zlib` APIs, causing the entire process to crash. All 11 synchronous zlib functio…

Medium CVSS 6.2

CVECVE-2026-58045

First seen2026-08-04 02:15 UTC

Disclosed2026-08-04 01:16 UTC

Last updated2026-08-04 02:15 UTC

Channel statusauto

Summary

A flaw in Node.js allows a spoofed `TypedArray` `byteLength` to trigger a reachable assertion in the synchronous `node:zlib` APIs, causing the entire process to crash. All 11 synchronous zlib functions are affected. Repeated exploitation of this condition can result in a denial of service. This vulnerability affects Node.js **22.x**, **24.x**, and **26.x**.

In-depth triage · Auto channel

No in-depth report has been generated yet (DR-003 v2 AI pipeline is under construction).

Sources

NVD DATABASE

Original Links

https://nodejs.org/en/blog/vulnerability/july-2026-security-releases

Timeline

2026-08-04 nvd_ingest NVD