{
  "cveId": "CVE-2021-26291",
  "url": "https://patchblox.com/security/cve/CVE-2021-26291",
  "summary": "CVE-2021-26291 is fixed in 2 products on 1 platform, first by libmaven3-core-java 3.6.0-1~18.04.1ubuntu0.1~esm1, released April 23, 2021. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "libmaven3-core-java: Apache Maven will follow repositories that are defined in a dependency\u2019s Project Object Model (pom) which may be surp...",
  "description": "Apache Maven will follow repositories that are defined in a dependency\u2019s Project Object Model (pom) which may be surprising to some users, resulting in potential risk if a malicious actor takes over that repository or is able to insert themselves into a position to pretend to be that repository. Maven is changing the default behavior in 3.8.1\u002B to no longer follow http (non-SSL) repository references by default. More details available in the referenced urls. If you are currently using a repository manager to govern the repositories used by your builds, you are unaffected by the risks present in the legacy behavior, and are unaffected by this vulnerability and change to default behavior. See this link for more information about repository management: https://maven.apache.org/repository-management.html",
  "published": "2021-04-23T08:15:00Z",
  "severity": "Medium",
  "epss": 0.08691,
  "epssPercentile": 0.95163,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libmaven3-core-java",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.6.0-1~18.04.1ubuntu0.1~esm1",
      "fix": "libmaven3-core-java 3.6.0-1~18.04.1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libmaven3-core-java-3.6.0-1-18.04.1ubuntu0.1-esm1",
      "released": "2021-04-23T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libmaven3-core-java",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.6.3-1ubuntu0.1~esm1",
      "fix": "libmaven3-core-java 3.6.3-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libmaven3-core-java-3.6.3-1ubuntu0.1-esm1",
      "released": "2021-04-23T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libmaven3-core-java",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "3.6.3-5ubuntu0.1~esm1",
      "fix": "libmaven3-core-java 3.6.3-5ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-libmaven3-core-java-3.6.3-5ubuntu0.1-esm1",
      "released": "2021-04-23T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "maven",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "3.6.0-1~18.04.1ubuntu0.1~esm1",
      "fix": "maven 3.6.0-1~18.04.1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-maven-3.6.0-1-18.04.1ubuntu0.1-esm1",
      "released": "2021-04-23T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "maven",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "3.6.3-1ubuntu0.1~esm1",
      "fix": "maven 3.6.3-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-maven-3.6.3-1ubuntu0.1-esm1",
      "released": "2021-04-23T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "maven",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "3.6.3-5ubuntu0.1~esm1",
      "fix": "maven 3.6.3-5ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-maven-3.6.3-5ubuntu0.1-esm1",
      "released": "2021-04-23T08:15:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}