# CVE-2026-50554

## Summary

- **CVE ID:** CVE-2026-50554
- **Severity:** MEDIUM
- **CVSS Score:** 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
- **CWE:** CWE-200, CWE-285
- **Published:** Sep 3, 2026
- **Last Modified:** Sep 3, 2026

## Description

Note Mark is an open-source note-taking application. Prior to version 0.19.5, GET /api/books/{bookID}/notes is an unauthenticated endpoint that accepts a "deleted" query parameter. When the request is ?deleted=true, the service runs the query with Unscoped() (bypassing GORM's soft-delete scope) but keeps the read-authorization clause as "owner_id = ? OR is_public = ?". As a result, any unauthenticated caller can enumerate the metadata of soft-deleted ("trashed") notes belonging to any public book — notes the owner explicitly deleted and expected to be removed from public view. This issue has been patched in version 0.19.5.

## Affected Products

- enchant97 — note-mark (< 0.19.5)

## References

- [CNA](https://github.com/enchant97/note-mark/security/advisories/GHSA-588f-fvcv-xhvf)
- [CNA](https://github.com/enchant97/note-mark/commit/9c9b72740f22a06131a8f64b53bb08e3b05b81a6)
- [CNA](https://github.com/enchant97/note-mark/releases/tag/v0.19.5)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.24%
- **EPSS Percentile:** 15.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._