{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "3.6.15"
              },
              {
                "introduced": "3.7.0"
              },
              {
                "fixed": "3.7.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "c61572660382863595c6b51ccf2263e3d2c4bfce"
            },
            {
              "fixed": "d9767bd2c6558d4ef1499568cdc72d053f3329ac"
            },
            {
              "fixed": "18e0b08c282c89ae51612c4eff67af2a45ff5163"
            },
            {
              "fixed": "50518073740c4501058e366300b42c2f1925cb05"
            }
          ],
          "repo": "https://github.com/laurent22/joplin",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-r24r-gp6h-cwgf"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-20",
      "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49453.json"
  },
  "details": "Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.6.15 and 3.7.2, Joplin accepts synchronized resource metadata whose id or file_extension contains parent-directory or path-separator characters. BaseItem.unserialize() stores the unvalidated fields, resourceFilename() concatenates them into a destination path, and ResourceFetcher writes the attacker-controlled resource blob outside the resource directory during background synchronization. An attacker with write access to a configured sync target or shared notebook can create or overwrite files at an attacker-chosen existing path without user interaction. This issue is fixed in versions 3.6.15 and 3.7.2.",
  "id": "CVE-2026-49453",
  "modified": "2026-09-24T03:30:39.808643092Z",
  "published": "2026-09-21T20:50:28.455Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49453.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/laurent22/joplin/security/advisories/GHSA-r24r-gp6h-cwgf"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49453"
    },
    {
      "type": "FIX",
      "url": "https://github.com/laurent22/joplin/commit/18e0b08c282c89ae51612c4eff67af2a45ff5163"
    },
    {
      "type": "FIX",
      "url": "https://github.com/laurent22/joplin/commit/50518073740c4501058e366300b42c2f1925cb05"
    },
    {
      "type": "FIX",
      "url": "https://github.com/laurent22/joplin/pull/15540"
    },
    {
      "type": "FIX",
      "url": "https://github.com/laurent22/joplin/pull/15672"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Joplin: Path traversal in resource sync — silent arbitrary file write outside the resource directory"
}