Feed/CVE-2026-64641
CVE-2026-64641HIGHCVSS 7.5

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

Published Jul 22, 2026·Updated Jul 29, 2026

NVD Description

## Impact 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. ## Workarounds No workaround exists besides upgrading. Applications using Pages Router or not using Server Actions are not vulnerable.

Affected Packages (1)

nextNPM
From 13.0.0
Fixed in 15.5.21

References

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