{
  "cveId": "CVE-2026-54428",
  "url": "https://patchblox.com/security/cve/CVE-2026-54428",
  "summary": "CVE-2026-54428 is fixed in httpcomponents-core5 on 1 platform by DEBIAN-CVE-2026-54428 (version 5.4.3-1), released July 1, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "httpcomponents-core5: Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core (5.4.2...",
  "description": "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.",
  "published": "2026-07-01T18:16:34Z",
  "severity": "high",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.00871,
  "epssPercentile": 0.59093,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "httpcomponents-core5",
      "release": "Debian 14",
      "fixedVersion": "5.4.3-1",
      "fix": "DEBIAN-CVE-2026-54428",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-54428",
      "released": "2026-07-01T18:16:34Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}