CVE-2026-50553

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/enchant97/note-mark/commit/67b7de04308a858ef27ceff87b514067b6d667e5
https://github.com/enchant97/note-mark/releases/tag/v0.19.5
https://github.com/enchant97/note-mark/security/advisories/GHSA-rqrh-8wpv-x7hh
https://github.com/enchant97/note-mark/security/advisories/GHSA-rqrh-8wpv-x7hh

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-04 18:17

Updated : 2026-09-09 21:09

NVD link : CVE-2026-50553

Mitre link : CVE-2026-50553

CVE.ORG link : CVE-2026-50553

JSON object : View

Products Affected

No product.

CWE

CWE-20

Improper Input Validation

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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