{
  "fix": "libxstream-java 1.4.11.1-1ubuntu0.3",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libxstream-java-1.4.11.1-1ubuntu0.3",
  "summary": "libxstream-java 1.4.11.1-1ubuntu0.3, released December 27, 2022, fixes 15 CVEs in libxstream-java. One of them is being exploited (CVE-2021-39144); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.",
  "platform": "linux",
  "type": "package",
  "title": "libxstream-java 1.4.11.1-1ubuntu0.3 for Ubuntu 20.04 LTS (focal)",
  "released": "2022-12-27T16:15:00Z",
  "priority": "Patch now",
  "priorityTier": 1,
  "priorityReason": "Closes CVE-2021-39144, exploited (CISA KEV)",
  "supported": false,
  "cveCount": 15,
  "exploitedCveCount": 1,
  "kevCveCount": 1,
  "ransomwareCveCount": 0,
  "maxEpss": 0.98124,
  "maxCvss": 7.5,
  "appliesTo": [
    {
      "product": "libxstream-java",
      "productUrl": "https://patchblox.com/security/product/linux/libxstream-java",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.4.11.1-1ubuntu0.3",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2021-39144",
      "url": "https://patchblox.com/security/cve/CVE-2021-39144",
      "title": "libxstream-java: XStream is a simple library to serialize objects to XML and back again",
      "priority": "Patch now",
      "severity": "Medium",
      "epss": 0.98124,
      "kev": true,
      "ransomware": false,
      "exploited": true,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-41966",
      "url": "https://patchblox.com/security/cve/CVE-2022-41966",
      "title": "libxstream-java: libxstream-java - security update",
      "priority": "High",
      "severity": "high",
      "cvss": 7.5,
      "epss": 0.09347,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-39141",
      "url": "https://patchblox.com/security/cve/CVE-2021-39141",
      "title": "libxstream-java: XStream is a simple library to serialize objects to XML and back again",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.16118,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-39146",
      "url": "https://patchblox.com/security/cve/CVE-2021-39146",
      "title": "libxstream-java: XStream is a simple library to serialize objects to XML and back again",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.143,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-39152",
      "url": "https://patchblox.com/security/cve/CVE-2021-39152",
      "title": "libxstream-java: XStream is a simple library to serialize objects to XML and back again",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.11377,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-39140",
      "url": "https://patchblox.com/security/cve/CVE-2021-39140",
      "title": "libxstream-java: XStream is a simple library to serialize objects to XML and back again",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.05918,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-39147",
      "url": "https://patchblox.com/security/cve/CVE-2021-39147",
      "title": "libxstream-java: XStream is a simple library to serialize objects to XML and back again",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.04735,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-39148",
      "url": "https://patchblox.com/security/cve/CVE-2021-39148",
      "title": "libxstream-java: XStream is a simple library to serialize objects to XML and back again",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.04735,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-39149",
      "url": "https://patchblox.com/security/cve/CVE-2021-39149",
      "title": "libxstream-java: XStream is a simple library to serialize objects to XML and back again",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.04735,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-39151",
      "url": "https://patchblox.com/security/cve/CVE-2021-39151",
      "title": "libxstream-java: XStream is a simple library to serialize objects to XML and back again",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.04735,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-39154",
      "url": "https://patchblox.com/security/cve/CVE-2021-39154",
      "title": "libxstream-java: XStream is a simple library to serialize objects to XML and back again",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.04735,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-39139",
      "url": "https://patchblox.com/security/cve/CVE-2021-39139",
      "title": "libxstream-java: XStream is a simple library to serialize objects to XML and back again",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.0454,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-39153",
      "url": "https://patchblox.com/security/cve/CVE-2021-39153",
      "title": "libxstream-java: XStream is a simple library to serialize objects to XML and back again",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.04457,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-39145",
      "url": "https://patchblox.com/security/cve/CVE-2021-39145",
      "title": "libxstream-java: XStream is a simple library to serialize objects to XML and back again",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.04065,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-39150",
      "url": "https://patchblox.com/security/cve/CVE-2021-39150",
      "title": "libxstream-java: XStream is a simple library to serialize objects to XML and back again",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.03437,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-11T19:49:26Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}