{
  "cveId": "CVE-2020-1957",
  "url": "https://patchblox.com/security/cve/CVE-2020-1957",
  "summary": "CVE-2020-1957 is fixed in libshiro-java on 1 platform, first by libshiro-java 1.3.2-3~18.04.1, released June 22, 2020. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "libshiro-java: Apache Shiro before 1.5.2, when using Apache Shiro with Spring dynamic controllers, a specially crafted request may c...",
  "description": "Apache Shiro before 1.5.2, when using Apache Shiro with Spring dynamic controllers, a specially crafted request may cause an authentication bypass.",
  "published": "2020-03-25T09:15:00Z",
  "severity": "Medium",
  "epss": 0.23326,
  "epssPercentile": 0.97794,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libshiro-java",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.3.2-3~18.04.1",
      "fix": "libshiro-java 1.3.2-3~18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libshiro-java-1.3.2-3-18.04.1",
      "released": "2020-06-22T12:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libshiro-java",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.3.2-4ubuntu0.1",
      "fix": "libshiro-java 1.3.2-4ubuntu0.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libshiro-java-1.3.2-4ubuntu0.1",
      "released": "2020-06-22T12:15:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}