{
  "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",
  "summary": "matrix-synapse 0.24.0\u002Bdfsg-1ubuntu0.1~esm1, released November 7, 2019, fixes 7 CVEs in matrix-synapse. None of them is reported as exploited. Patch Radar priority: Routine. The product is no longer supported.",
  "platform": "linux",
  "type": "package",
  "title": "matrix-synapse 0.24.0\u002Bdfsg-1ubuntu0.1~esm1 for Ubuntu 18.04.6 LTS (bionic)",
  "released": "2019-11-07T16:15:00Z",
  "priority": "Routine",
  "priorityTier": 4,
  "priorityReason": "Closes 7 CVEs, none high severity",
  "supported": false,
  "cveCount": 7,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.02485,
  "appliesTo": [
    {
      "product": "matrix-synapse",
      "productUrl": "https://patchblox.com/security/product/linux/matrix-synapse",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "0.24.0\u002Bdfsg-1ubuntu0.1~esm1",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2019-5885",
      "url": "https://patchblox.com/security/cve/CVE-2019-5885",
      "title": "matrix-synapse: Matrix Synapse before 0.34.0.1, when the macaroon_secret_key authentication parameter is not set, uses a predictable...",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.02485,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-12423",
      "url": "https://patchblox.com/security/cve/CVE-2018-12423",
      "title": "matrix-synapse: In Synapse before 0.31.2, unauthorised users can hijack rooms when there is no m.room.power_levels event in force.",
      "priority": "Routine",
      "severity": "Low",
      "epss": 0.01811,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2019-11842",
      "url": "https://patchblox.com/security/cve/CVE-2019-11842",
      "title": "matrix-synapse: An issue was discovered in Matrix Sydent before 1.0.3 and Synapse before 0.99.3.1",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.01795,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-12291",
      "url": "https://patchblox.com/security/cve/CVE-2018-12291",
      "title": "matrix-synapse: The on_get_missing_events function in handlers/federation.py in Matrix Synapse before 0.31.1 has a security bug in th...",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.01792,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-16515",
      "url": "https://patchblox.com/security/cve/CVE-2018-16515",
      "title": "matrix-synapse: Matrix Synapse before 0.33.3.1 allows remote attackers to spoof events and possibly have unspecified other impacts by...",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.01538,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-10657",
      "url": "https://patchblox.com/security/cve/CVE-2018-10657",
      "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 -...",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.01494,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2019-18835",
      "url": "https://patchblox.com/security/cve/CVE-2019-18835",
      "title": "matrix-synapse: Matrix Synapse before 1.5.0 mishandles signature checking on some federation APIs",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.00864,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-12T19:57:06Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}