{
  "cveId": "CVE-2026-30853",
  "url": "https://patchblox.com/security/cve/CVE-2026-30853",
  "summary": "CVE-2026-30853 is fixed in calibre on 1 platform, first by DEBIAN-CVE-2026-30853, released March 13, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "calibre: calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books",
  "description": "calibre is a cross-platform e-book manager for viewing, converting, editing, and cataloging e-books. Prior to 9.5.0, a path traversal vulnerability in the RocketBook (.rb) input plugin (src/calibre/ebooks/rb/reader.py) allows an attacker to write arbitrary files to any path writable by the calibre process when a user opens or converts a crafted .rb file. This is the same bug class fixed in CVE-2026-26065 for the PDB readers, but the fix was never applied to the RB reader. This vulnerability is fixed in 9.5.0.",
  "published": "2026-03-13T19:54:35Z",
  "severity": "high",
  "cvss": 8.2,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:H",
  "epss": 0.0019,
  "epssPercentile": 0.08758,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "calibre",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.13.0\u002Brepack-2\u002Bdeb12u8",
      "fix": "DEBIAN-CVE-2026-30853",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-30853",
      "released": "2026-03-13T19:54:35Z"
    },
    {
      "platform": "linux",
      "product": "calibre",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "8.5.0\u002Bds-1\u002Bdeb13u3",
      "fix": "DEBIAN-CVE-2026-30853",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-30853",
      "released": "2026-03-13T19:54:35Z"
    },
    {
      "platform": "linux",
      "product": "calibre",
      "release": "Debian 14",
      "fixedVersion": "9.5.0\u002Bds\u002B~0.10.5-1",
      "fix": "DEBIAN-CVE-2026-30853",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-30853",
      "released": "2026-03-13T19:54:35Z"
    }
  ],
  "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"
  }
}