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Highest advisory severityHigh 1 vendor · 1 advisory

CVE-2026-64641

CVE-2026-64641: 1 tracked advisory record across Red Hat. Compare source-reported impact, fixes and remediation.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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Vendor advisory comparison

Red Hat

1 advisory
  • Advisory severityHigh7.5

    High [CVE-2026-64641] Denial of Service via crafted requests to App Router with Server Actions

    CVE-2026-64641Source published Source updated

    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. A remote attacker can send specially crafted requests to Next.js applications that utilize the App Router with Server Actions. This can lead to excessive CPU usage, causing the application to become unresponsive and preventing it from processing further requests, resulting in a Denial of Service (DoS). Important: A denial of service flaw exists in Next.js applications utilizing the App Router with Server…

    Affected products in this advisory
    • Streams for Apache Kafka 3.2.1
    • Red Hat Build of Keycloak
    • Red Hat Ceph Storage 5
    • Red Hat Ceph Storage 6

    7 more entries in the full advisory.

    Source-reported affected versions
    • 13.0.0
    • 15.5.20
    • 16.0.0
    • 16.2.10
    Source-reported fixed versions
    • 15.5.21
    • 16.2.11
    • next
    • RHSA-2026:54435
    Mitigation guidance
    No mitigation guidance extracted; consult the source.
    Full advisory and evidenceOpen source bulletin

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