Security advisory

{
  "id": "cd22e958e2f89bc93e632a4836ca6380a6bcfd93b976fe8aa0f9fdc3547c62cd",
  "url": "https://osv.dev/vulnerability/CVE-2018-7889",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-7889",
    "summary": "gui2/viewer/bookmarkmanager.py in Calibre 3.18 calls cPickle.load on imported bookmark data, which allows remote attackers to execute arbitrary code via a crafted .pickle file, as demonstrated by Python code that contains an os.system call.",
    "evidence": "osv:CVE-2018-7889",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-7889",
      "aliases": [
        "CVE-2018-7889"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/kovidgoyal/calibre",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a76a438f92f62fd007fdb1d23d086e989f300dea"
                },
                {
                  "last_affected": "a76a438f92f62fd007fdb1d23d086e989f300dea"
                },
                {
                  "fixed": "aeb5b036a0bf657951756688b3c72bd68b6e4a7d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:calibre-ebook:calibre:3.18.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.18.0"
                      },
                      {
                        "last_affected": "3.18.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "range": [
                      {
                        "fixed": "aeb5b036a0bf657951756688b3c72bd68b6e4a7d"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.18.0",
            "v3.18.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-7889.json"
          }
        }
      ],
      "modified": "2026-10-20T10:50:30.769917334Z",
      "provider": "osv",
      "references": [
        "https://github.com/kovidgoyal/calibre/commit/aeb5b036a0bf657951756688b3c72bd68b6e4a7d",
        "https://bugs.launchpad.net/calibre/+bug/1753870"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-7889",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 381787,
  "published_at": "2018-03-08T21:29:00.207+00:00"
}