Bug 2558116

Summary:	CVE-2026-64641 icecat: Next.js: Denial of Service via crafted requests to App Router with Server Actions [fedora-all]
Product:	[Fedora] Fedora	Reporter:	Florencio Cano <fcanogab>
Component:	icecat	Assignee:	Antonio T. sagitter <sagitterghostproton.me>
Status:	NEW ---	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	high
Version:	rawhide	CC:	sagitterghostproton.me
Target Milestone:	---	Keywords:	Security, SecurityTracking
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:	{"flaws": ["c00bae0a-d8a6-4551-ae85-b54b282b2d52"]}
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2507613

Description Florencio Cano 2026-10-21 06:47:44 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, crafted requests targeting Next.js applications using App Router with at least one Server Action can lead to excessive CPU usage blocking processing of further requests in the same process. This issue has been fixed in versions 15.5.21 and 16.2.11.