Bug 2558129

Summary:	CVE-2026-64646 mozjs128: Next.js: Denial of Service via excessive memory consumption in Server Actions [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Florencio Cano <fcanogab>
Component:	mozjs128	Assignee:	František Zatloukal <fzatlouk>
Status:	NEW ---	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	rawhide	CC:	fzatlouk
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["cb012f45-97d8-482e-8f51-24e991baddb8"]}
Fixed In Version:		Doc Type:	---
Doc Text:		Story Points:	---
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2507643

Description Florencio Cano 2026-10-21 06:53:03 UTC

Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

Next.js is a React framework for building full-stack web applications. In versions 13.0.0 through 15.5.20 and 16.0.0 through 16.2.10, requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive memory consumption if that Server Actions uses the Edge runtime. This issue has been fixed in versions 15.5.21 and 16.2.11.