{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.19.5"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "67b7de04308a858ef27ceff87b514067b6d667e5"
            },
            {
              "fixed": "7cdfd90f58dc9d15b9ca050971fd02ec93edf8e5"
            }
          ],
          "repo": "https://github.com/enchant97/note-mark",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-rqrh-8wpv-x7hh"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-20",
      "CWE-22"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50553.json"
  },
  "details": "Note Mark is an open-source note-taking application. Prior to version 0.19.5, Note Mark validates book and note slug values with the OpenAPI/huma tag pattern:\"[a-z0-9-]+\". huma compiles this with regexp.MustCompile(s.Pattern) and tests it with patternRe.MatchString(str), an UNANCHORED match. Because the pattern is not anchored (^...$), any string that merely CONTAINS one [a-z0-9-] substring passes validation. A slug such as ../../../../../../tmp/escape is accepted and stored verbatim. The data-export CLI commands (note-mark migrate export and note-mark migrate export-v1) join these unsanitized slugs straight into the output path with path.Join / filepath.Join, then os.MkdirAll the directory and os.Create the note file. path.Join resolves the ../ segments, so the note content file is written OUTSIDE the configured export directory. The export process commonly runs as root (default in Docker / bare-metal admin usage), so this is a root-privilege arbitrary directory create + file write. This issue has been patched in version 0.19.5.",
  "id": "CVE-2026-50553",
  "modified": "2026-09-06T03:30:30.755598536Z",
  "published": "2026-09-04T17:25:11.331Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/enchant97/note-mark/releases/tag/v0.19.5"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/50xxx/CVE-2026-50553.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/enchant97/note-mark/security/advisories/GHSA-rqrh-8wpv-x7hh"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50553"
    },
    {
      "type": "FIX",
      "url": "https://github.com/enchant97/note-mark/commit/67b7de04308a858ef27ceff87b514067b6d667e5"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Note Mark: Path traversal via unsanitized book/note slug in migrate export (sibling of GHSA-g49p)"
}