{
  "cveId": "CVE-2026-76956",
  "url": "https://patchblox.com/security/cve/CVE-2026-76956",
  "summary": "CVE-2026-76956 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-76956, released September 5, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy\u0027s return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted XML content.",
  "description": "In libexpat 2.8.2 and 2.8.3 before 2.8.4, misinterpretation of getentropy\u0027s return code leads to insufficient entropy, which results in being vulnerable to hash flooding attacks, causing a denial of service via crafted XML content.",
  "published": "2026-08-20T05:16:29Z",
  "severity": "Moderate",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "cwe": "Unexpected Status Code or Return Value",
  "epss": 0.00287,
  "epssPercentile": 0.21419,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-76956",
  "fixes": [
    {
      "platform": "linux",
      "product": "MozillaFirefox",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "153.5.0-160000.1.1",
      "fix": "OPENSUSE-SU-2026:22139-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-22139-1",
      "released": "2026-11-07T00:47:19Z"
    },
    {
      "platform": "linux",
      "product": "MozillaFirefox",
      "release": "sles 15.6",
      "fixedVersion": "153.5.0-150400.157.16.1",
      "fix": "SUSE-SU-2026:4834-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4834-1",
      "released": "2026-11-07T00:42:08Z"
    },
    {
      "platform": "linux",
      "product": "MozillaFirefox",
      "release": "sles 15.7",
      "fixedVersion": "153.5.0-150400.157.16.1",
      "fix": "SUSE-SU-2026:4834-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4834-1",
      "released": "2026-11-07T00:42:08Z"
    },
    {
      "platform": "linux",
      "product": "MozillaFirefox",
      "release": "sles 16.0",
      "fixedVersion": "153.5.0-160000.1.1",
      "fix": "SUSE-SU-2026:24260-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-24260-1",
      "released": "2026-11-07T00:44:01Z"
    },
    {
      "platform": "linux",
      "product": "MozillaThunderbird",
      "release": "sles 15.7",
      "fixedVersion": "153.5.0-150400.13.9.1",
      "fix": "SUSE-SU-2026:4736-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4736-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "2.9.0-1~deb13u1",
      "fix": "DEBIAN-CVE-2026-76956",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-76956",
      "released": "2026-09-05T01:57:10Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "Debian 14",
      "fixedVersion": "2.8.4-1",
      "fix": "DEBIAN-CVE-2026-76956",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-76956",
      "released": "2026-09-05T01:57:10Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "opensuse-leap 16.0",
      "fixedVersion": "2.8.4-160000.1.1",
      "fix": "OPENSUSE-SU-2026:21945-1",
      "url": "https://patchblox.com/security/fix/linux/opensuse-su-2026-21945-1",
      "released": "2026-09-24T07:03:56Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "sles 15.6",
      "fixedVersion": "2.8.5-150400.3.40.1",
      "fix": "SUSE-SU-2026:4623-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4623-1",
      "released": "2026-11-07T00:41:11Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "sles 15.7",
      "fixedVersion": "2.8.5-150700.3.15.1",
      "fix": "SUSE-SU-2026:4619-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-4619-1",
      "released": "2026-11-07T00:43:02Z"
    },
    {
      "platform": "linux",
      "product": "expat",
      "release": "sles 16.0",
      "fixedVersion": "2.8.4-160000.1.1",
      "fix": "SUSE-SU-2026:23912-1",
      "url": "https://patchblox.com/security/fix/linux/suse-su-2026-23912-1",
      "released": "2026-09-24T07:07:13Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}