{
  "cveId": "CVE-2021-33516",
  "url": "https://patchblox.com/security/cve/CVE-2021-33516",
  "summary": "CVE-2021-33516 is fixed in 6 products on 1 platform, first by gir1.2-gupnp-1.2 1.2.3-0ubuntu0.20.04.2, released May 24, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "gir1.2-gupnp-1.6: An issue was discovered in GUPnP before 1.0.7 and 1.1.x and 1.2.x before1.2.5",
  "description": "An issue was discovered in GUPnP before 1.0.7 and 1.1.x and 1.2.x before1.2.5. It allows DNS rebinding. A remote web server can exploit thisvulnerability to trick a victim\u0027s browser into triggering actions againstlocal UPnP services implemented using this library. Depending on theaffected service, this could be used for data exfiltration, data tempering,etc.",
  "published": "2021-05-24T08:15:00Z",
  "severity": "Medium",
  "cvss": 8.3,
  "epss": 0.01084,
  "epssPercentile": 0.65449,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "gir1.2-gupnp-1.2",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.2.3-0ubuntu0.20.04.2",
      "fix": "gir1.2-gupnp-1.2 1.2.3-0ubuntu0.20.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-gir1.2-gupnp-1.2-1.2.3-0ubuntu0.20.04.2",
      "released": "2021-05-24T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "gir1.2-gupnp-1.6",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "1.2.4-1ubuntu1",
      "fix": "gir1.2-gupnp-1.6 1.2.4-1ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-gir1.2-gupnp-1.6-1.2.4-1ubuntu1",
      "released": "2026-01-16T01:42:22Z"
    },
    {
      "platform": "linux",
      "product": "gir1.2-gupnp-1.6",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "1.2.4-1ubuntu1",
      "fix": "gir1.2-gupnp-1.6 1.2.4-1ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-gir1.2-gupnp-1.6-1.2.4-1ubuntu1",
      "released": "2026-01-16T01:42:24Z"
    },
    {
      "platform": "linux",
      "product": "gupnp",
      "release": "RHEL 8",
      "fixedVersion": "0:1.0.6-2.el8_4",
      "fix": "RHSA-2021:2363",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-2363",
      "released": "2021-06-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gupnp",
      "release": "ol 8",
      "fixedVersion": "0:1.0.6-2.el8_4",
      "fix": "ELSA-2021-2363",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-2363",
      "released": "2021-06-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gupnp-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:1.0.6-2.el8_4",
      "fix": "RHSA-2021:2363",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-2363",
      "released": "2021-06-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "gupnp-devel",
      "release": "ol 8",
      "fixedVersion": "0:1.0.6-2.el8_4",
      "fix": "ELSA-2021-2363",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-2363",
      "released": "2021-06-10T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "libgupnp-1.2-0",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.2.3-0ubuntu0.20.04.2",
      "fix": "libgupnp-1.2-0 1.2.3-0ubuntu0.20.04.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libgupnp-1.2-0-1.2.3-0ubuntu0.20.04.2",
      "released": "2021-05-24T08:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libgupnp-1.6-0",
      "release": "Ubuntu 24.10 (oracular)",
      "fixedVersion": "1.2.4-1ubuntu1",
      "fix": "libgupnp-1.6-0 1.2.4-1ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-oracular-libgupnp-1.6-0-1.2.4-1ubuntu1",
      "released": "2026-01-16T01:42:22Z"
    },
    {
      "platform": "linux",
      "product": "libgupnp-1.6-0",
      "release": "Ubuntu 25.04 (plucky)",
      "fixedVersion": "1.2.4-1ubuntu1",
      "fix": "libgupnp-1.6-0 1.2.4-1ubuntu1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-plucky-libgupnp-1.6-0-1.2.4-1ubuntu1",
      "released": "2026-01-16T01:42:24Z"
    }
  ],
  "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"
  }
}