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Next.js: Denial of Service in App Router using Server Actions

Exact source revision recorded 30 Oct 2026 19:45:26 UTC. It does not establish the source's current position. Latest evidence.

cve-program · CVE-2026-94482

Published

Next.js is a React framework for building full-stack web applications. From 13.0.0 until 15.5.28 and 16.4.1, crafted requests targeting App Router applications with at least one Server Action can cause excessive CPU consumption and block processing of further requests in the same process. Applications using the Pages Router and App Router applications without Server Actions are not affected. This issue is fixed in versions 15.5.28 and 16.4.1.

Source published
22 Oct 2026 15:22:10 UTC
Source modified
30 Oct 2026 18:09:28 UTC
Observed here
30 Oct 2026 19:45:26 UTC
Source terms
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Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · 8.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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Sources last checked 8 Nov 07:24 UTC · 275 of 275 readable · 273 fully read · checking again after a restart · documentation 469/469 current