Bug 2507613 (CVE-2026-64641) - CVE-2026-64641 next: Next.js: Denial of Service via crafted requests to App Router with Server Actions
Summary: CVE-2026-64641 next: Next.js: Denial of Service via crafted requests to App R...
Keywords:
Status: NEW
Alias: CVE-2026-64641
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-27 19:02 UTC by OSIDB Bzimport
Modified: 2026-07-28 13:16 UTC (History)
14 users (show)

Fixed In Version:
Clone Of:
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Description OSIDB Bzimport 2026-07-27 19:02:18 UTC 
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.
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