{
  "cveId": "CVE-2018-10657",
  "url": "https://patchblox.com/security/cve/CVE-2018-10657",
  "summary": "CVE-2018-10657 is fixed in matrix-synapse on 1 platform by matrix-synapse 0.24.0\u002Bdfsg-1ubuntu0.1~esm1 (version 0.24.0\u002Bdfsg-1ubuntu0.1~esm1), released November 7, 2019. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "matrix-synapse: Matrix Synapse before 0.28.1 is prone to a denial of service flaw where malicious events injected with depth = 2^63 -...",
  "description": "Matrix Synapse before 0.28.1 is prone to a denial of service flaw where malicious events injected with depth = 2^63 - 1 render rooms unusable, related to federation/federation_base.py and handlers/message.py, as exploited in the wild in April 2018.",
  "published": "2018-05-02T09:29:00Z",
  "severity": "Medium",
  "epss": 0.01494,
  "epssPercentile": 0.7427,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "matrix-synapse",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.24.0\u002Bdfsg-1ubuntu0.1~esm1",
      "fix": "matrix-synapse 0.24.0\u002Bdfsg-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-matrix-synapse-0.24.0-dfsg-1ubuntu0.1-esm1",
      "released": "2019-11-07T16:15:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T12:40:37Z"
}