{
  "fix": "libpython3.9 3.9.5-3~20.04.1",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libpython3.9-3.9.5-3-20.04.1",
  "summary": "libpython3.9 3.9.5-3~20.04.1, released August 22, 2023, fixes 6 CVEs in libpython3.9. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.",
  "platform": "linux",
  "type": "package",
  "title": "libpython3.9 3.9.5-3~20.04.1 for Ubuntu 20.04 LTS (focal)",
  "released": "2023-08-22T12:16:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2021-3177, high severity",
  "supported": false,
  "cveCount": 6,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.41125,
  "maxCvss": 9.8,
  "appliesTo": [
    {
      "product": "libpython3.9",
      "productUrl": "https://patchblox.com/security/product/linux/libpython3.9",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.9.5-3~20.04.1",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2021-3177",
      "url": "https://patchblox.com/security/cve/CVE-2021-3177",
      "title": "Python 3.7 and 2 others: Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 9.8,
      "epss": 0.24002,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-29921",
      "url": "https://patchblox.com/security/cve/CVE-2021-29921",
      "title": "Python 3.8: In Python before 3,9,5, the ipaddress library mishandles leading zero characters in the octets of an\u2026",
      "priority": "High",
      "severity": "MODERATE",
      "cvss": 9.8,
      "epss": 0.06761,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-48565",
      "url": "https://patchblox.com/security/cve/CVE-2022-48565",
      "title": "Python 3.7 and 4 others: An XML External Entity (XXE) issue was discovered in Python through 3.9.1.",
      "priority": "High",
      "severity": "MODERATE",
      "cvss": 9.8,
      "epss": 0.05233,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3733",
      "url": "https://patchblox.com/security/cve/CVE-2021-3733",
      "title": "Python 3.7 and 5 others: Uncontrolled Resource Consumption",
      "priority": "High",
      "severity": "moderate",
      "cvss": 8.8,
      "epss": 0.04799,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23336",
      "url": "https://patchblox.com/security/cve/CVE-2021-23336",
      "title": "Web Cache Poisoning",
      "priority": "Routine",
      "severity": "MODERATE",
      "cvss": 5.9,
      "epss": 0.41125,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-3426",
      "url": "https://patchblox.com/security/cve/CVE-2021-3426",
      "title": "Python 3.7 and 3 others: There\u0027s a flaw in Python 3\u0027s pydoc.",
      "priority": "Routine",
      "severity": "MODERATE",
      "cvss": 5.7,
      "epss": 0.01863,
      "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"
  }
}