CVE-2026-58045

MEDIUM CVSS 6.2 View on NVD ↗

Description

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**.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

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

Published: Aug 04, 2026 01:16 UTC Modified: Aug 04, 2026 16:16 UTC