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Maven package

org.apache.httpcomponents.core5:httpcore5-h2

Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.

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1 actionable advisory, newest first. Withdrawn advisories and news are excluded. Coverage is partial.

  1. High, CVSS 7.5MavenPublished

    Apache HttpComponents Core: HPackDecoder Unlimited Header List Size Before SETTINGS ACK

    CVE-2026-54428 · GHSA-v3jc-474w-2wm6

    Affected
    • Maven org.apache.httpcomponents.core5:httpcore5-h2 < 5.4.3; >= 5.5-alpha1, < 5.5-beta2
    Fixed in
    5.4.35.5-beta2· Vendor fix available
    Issue
    Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows an remote attacker to cause a denial of service through memory exhaustion by sending oversized compressed header blocks before the HTTP/2 SETTINGS acknowledgement causes the configured header list size limit to be applied.

    Recommended action: Upgrade to 5.5-beta2 (pre-release) or 5.4.3 by release line, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.

    Sources:github.comSource checked Evidence →