BIT-node-2026-58045

vendorUSosv

view advisory published 2026-08-17Licence: per source

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**.

describes (1)

Related CVEs.

ID	severity	EPSS	exploitable	published
CVE-2026-58045US	—	0.17% (6th)	Exploit	2026-08-04
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 synch…

references

External citations — patches, advisories, analysis.

https://nodejs.org/en/blog/vulnerability/july-2026-security-releasesWEB
https://nvd.nist.gov/vuln/detail/CVE-2026-58045WEB

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