Bug 2510857 (CVE-2026-58045)

Summary: CVE-2026-58045 nodejs: Node.js: Denial of Service vulnerability
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: gtanzill, jbuscemi, kaycoth, rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Node.js. A malicious actor could exploit this vulnerability by providing a specially crafted input to the synchronous `node:zlib` APIs. This could cause the Node.js process to crash, leading to a denial of service and making the application unavailable to users.
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Description OSIDB Bzimport 2026-08-04 01:01:39 UTC 
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**.