{
  "cveId": "CVE-2026-79591",
  "url": "https://patchblox.com/security/cve/CVE-2026-79591",
  "summary": "CVE-2026-79591 is fixed in r-cran-readxl on 1 platform by DEBIAN-CVE-2026-79591 (version 1.6.0-1), released September 10, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "r-cran-readxl: A heap-buffer-overflow and use-after-free vulnerability exists in the xls_getCSS() function of libxls 1.6.3 due to in...",
  "description": "A heap-buffer-overflow and use-after-free vulnerability exists in the xls_getCSS() function of libxls 1.6.3 due to insufficient validation of a file-controlled font index.",
  "published": "2026-09-10T21:17:46Z",
  "severity": "high",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
  "epss": 0.00174,
  "epssPercentile": 0.06869,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "r-cran-readxl",
      "release": "Debian 14",
      "fixedVersion": "1.6.0-1",
      "fix": "DEBIAN-CVE-2026-79591",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-79591",
      "released": "2026-09-10T21:17:46Z"
    }
  ],
  "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"
  }
}