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Highest advisory severityHigh 1 vendor · 1 advisory

CVE-2026-12151

CVE-2026-12151: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.

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-2026-12151] Denial of Service due to unbounded memory growth via WebSocket frames

    CVE-2026-12151Source published Source updated

    Impact: The undici WebSocket client enforces maxPayloadSize on the cumulative byte count of fragments in a message but does not enforce a limit on the number of fragments. A malicious WebSocket server can stream many small or empty continuation frames that each pass per-frame and cumulative-size validation, collectively causing unbounded memory growth in the client process. The result is memory exhaustion and a denial of service. Affected applications are those using the undici WebSocket client (new WebSocket(...)) or the WebSocketStream API that can be induced to connect to an attacker-controlled or compromised WebSocket endpoint. All releases starting at undici 6.17.0 are affected. Patches: Upgrade to undici >= 6.26.0, >= 7.28.0, or >= 8.5.0. Workarounds: No workaround is available.…

    Affected products in this advisory
    • Cryostat 4 on RHEL 9
    • Red Hat AMQ Broker 7.13.6
    • Red Hat AMQ Broker 7.14.1
    • Red Hat Enterprise Linux 10.0 Extended Update Support

    22 more entries in the full advisory.

    Source-reported affected versions
    • 6.17.0
    Source-reported fixed versions
    • 6.26.0
    • 7.28.0
    • 8.5.0
    • cryostat/cryostat-grafana-dashboard-rhel9:4.2.0-13

    46 more entries in the full advisory.

    Mitigation guidance
    • Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
    Full advisory and evidenceOpen source bulletin

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