Products: 2
    Vulnerabilities: 4
    Known Exploited: 0
    0
    Critical Level Threats
    3
    High Level Threats
    0
    Medium Level Threats
    0
    Low Level Threats

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    Vulnerabilities

    CVE-2026-54556

    Http4s: HTTP/2 Denial of Service with Ember Backend

    Last Modified: Aug 29, 2026
    Published: Aug 26, 2026

    CVE-2026-73495

    blaze: Chunked-body trailer fields promoted into Request.headers in blaze-server (front-end header-sanitization bypass)

    Last Modified: Aug 13, 2026
    Published: Aug 12, 2026

    CVE-2026-73493

    http4s-blaze-server: Unbounded WebSocket message aggregation

    Last Modified: Aug 13, 2026
    Published: Aug 12, 2026

    CVE-2025-59822

    Http4s vulnerable to HTTP Request Smuggling due to improper handling of HTTP trailer section

    Last Modified: Oct 08, 2025
    Published: Sep 23, 2025
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    Http4s Vulnerabilities & Security CVEs | CVE-DB