{
  "cveId": "CVE-2026-5720",
  "url": "https://patchblox.com/security/cve/CVE-2026-5720",
  "summary": "CVE-2026-5720 is fixed in 5 products on 1 platform, first by miniupnpd 2.0.20171212-2ubuntu0.1~esm1, released April 17, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "miniupnpd: miniupnpd contains an integer underflow vulnerability in SOAPAction header parsing that allows remote attackers to ca...",
  "description": "miniupnpd contains an integer underflow vulnerability in SOAPAction header parsing that allows remote attackers to cause a denial of service or information disclosure by sending a malformed SOAPAction header with a single quote. Attackers can trigger an out-of-bounds memory read by exploiting improper length validation in ParseHttpHeaders(), where the parsed length underflows to a large unsigned value when passed to memchr(), causing the process to scan memory far beyond the allocated HTTP request buffer.",
  "published": "2026-04-17T15:16:00Z",
  "severity": "Medium",
  "cvss": 9.1,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
  "epss": 0.00674,
  "epssPercentile": 0.52383,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "miniupnpd",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "2.3.9-2\u002Bdeb13u1",
      "fix": "DEBIAN-CVE-2026-5720",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-5720",
      "released": "2026-05-15T16:01:09Z"
    },
    {
      "platform": "linux",
      "product": "miniupnpd",
      "release": "Debian 14",
      "fixedVersion": "2.3.10-1",
      "fix": "DEBIAN-CVE-2026-5720",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-5720",
      "released": "2026-05-15T16:01:09Z"
    },
    {
      "platform": "linux",
      "product": "miniupnpd",
      "release": "Fedora 43",
      "fixedVersion": "2.3.10-1.fc43",
      "fix": "FEDORA-2026-5F908CB040",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-5f908cb040",
      "released": "2026-04-20T14:34:46Z"
    },
    {
      "platform": "linux",
      "product": "miniupnpd",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "2.0.20171212-2ubuntu0.1~esm1",
      "fix": "miniupnpd 2.0.20171212-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-miniupnpd-2.0.20171212-2ubuntu0.1-esm1",
      "released": "2026-04-17T15:16:00Z"
    },
    {
      "platform": "linux",
      "product": "miniupnpd",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.1-6.1ubuntu0.1~esm1",
      "fix": "miniupnpd 2.1-6.1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-miniupnpd-2.1-6.1ubuntu0.1-esm1",
      "released": "2026-04-17T15:16:00Z"
    },
    {
      "platform": "linux",
      "product": "miniupnpd",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2.2.3-1ubuntu0.1~esm1",
      "fix": "miniupnpd 2.2.3-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-miniupnpd-2.2.3-1ubuntu0.1-esm1",
      "released": "2026-04-17T15:16:00Z"
    },
    {
      "platform": "linux",
      "product": "miniupnpd",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2.3.4-1ubuntu0.1~esm1",
      "fix": "miniupnpd 2.3.4-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-miniupnpd-2.3.4-1ubuntu0.1-esm1",
      "released": "2026-04-17T15:16:00Z"
    },
    {
      "platform": "linux",
      "product": "miniupnpd",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "2.3.9-2ubuntu0.1~esm1",
      "fix": "miniupnpd 2.3.9-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-miniupnpd-2.3.9-2ubuntu0.1-esm1",
      "released": "2026-04-17T15:16:00Z"
    },
    {
      "platform": "linux",
      "product": "miniupnpd-debuginfo",
      "release": "Fedora 43",
      "fixedVersion": "2.3.10-1.fc43",
      "fix": "FEDORA-2026-5F908CB040",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-5f908cb040",
      "released": "2026-04-20T14:34:46Z"
    },
    {
      "platform": "linux",
      "product": "miniupnpd-debugsource",
      "release": "Fedora 43",
      "fixedVersion": "2.3.10-1.fc43",
      "fix": "FEDORA-2026-5F908CB040",
      "url": "https://patchblox.com/security/fix/linux/fedora-2026-5f908cb040",
      "released": "2026-04-20T14:34:46Z"
    },
    {
      "platform": "linux",
      "product": "miniupnpd-iptables",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2.2.3-1ubuntu0.1~esm1",
      "fix": "miniupnpd-iptables 2.2.3-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-miniupnpd-iptables-2.2.3-1ubuntu0.1-esm1",
      "released": "2026-04-17T15:16:00Z"
    },
    {
      "platform": "linux",
      "product": "miniupnpd-iptables",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2.3.4-1ubuntu0.1~esm1",
      "fix": "miniupnpd-iptables 2.3.4-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-miniupnpd-iptables-2.3.4-1ubuntu0.1-esm1",
      "released": "2026-04-17T15:16:00Z"
    },
    {
      "platform": "linux",
      "product": "miniupnpd-iptables",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "2.3.9-2ubuntu0.1~esm1",
      "fix": "miniupnpd-iptables 2.3.9-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-miniupnpd-iptables-2.3.9-2ubuntu0.1-esm1",
      "released": "2026-04-17T15:16:00Z"
    },
    {
      "platform": "linux",
      "product": "miniupnpd-nftables",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2.2.3-1ubuntu0.1~esm1",
      "fix": "miniupnpd-nftables 2.2.3-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-miniupnpd-nftables-2.2.3-1ubuntu0.1-esm1",
      "released": "2026-04-17T15:16:00Z"
    },
    {
      "platform": "linux",
      "product": "miniupnpd-nftables",
      "release": "Ubuntu 24.04.5 LTS (noble)",
      "fixedVersion": "2.3.4-1ubuntu0.1~esm1",
      "fix": "miniupnpd-nftables 2.3.4-1ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-noble-miniupnpd-nftables-2.3.4-1ubuntu0.1-esm1",
      "released": "2026-04-17T15:16:00Z"
    },
    {
      "platform": "linux",
      "product": "miniupnpd-nftables",
      "release": "Ubuntu 26.04.1 LTS (resolute)",
      "fixedVersion": "2.3.9-2ubuntu0.1~esm1",
      "fix": "miniupnpd-nftables 2.3.9-2ubuntu0.1~esm1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-resolute-miniupnpd-nftables-2.3.9-2ubuntu0.1-esm1",
      "released": "2026-04-17T15:16:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}