CVE-2026-40265 json
Note Mark has Broken Access Control on Asset Download
published 2026-04-13 6 mo ago modified 2026-10-26 13 d ago also EUVD-2026-23336 , GHSA-p5w6-75f9-cc2p , GO-2026-5530
- cvss
- 5.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 38%
- public exploits
- 0
- none known
Summary
Note Mark is an open-source note-taking application. In versions 0.19.1 and prior, the asset download endpoint at /api/notes/{noteID}/assets/{assetID} is registered without authentication middleware, and the backend query does not verify ownership or book visibility. An unauthenticated user who knows a valid note ID and asset ID can retrieve the full contents of private note assets without authentication, regardless of whether the associated book is public or private. This issue has been fixed in version 0.19.2.
Patch / fix
- go github.com/enchant97/note-mark/backend 0.0.0-20260411145023-6593898855ad
- enchantedcode note_mark 0.19.2
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- 6 mo ago
Exploit prediction
0.44% chance of exploitation in the next 30 days, higher than 38% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
| GitHub | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/enchant97/note-mark/backend | <0.0.0-20260411145023-6593898855ad |
0.0.0-20260411145023-6593898855ad |
Affected products
- enchant97 note-mark
Classification
- Weakness
-
- CWE-862 Missing Authorization
References
-
github.com
/enchant97/note-mark/commit/6593898855add151eb9965d96998b05e14c62026
web
-
github.com
/enchant97/note-mark/security/advisories/GHSA-p5w6-75f9-cc2p
web, advisory
-
github.com
/enchant97/note-mark/releases/tag/v0.19.2
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-40265
advisory
-
github.com
/enchant97/note-mark
package
Sources
- CVE List CVE-2026-40265
- GitHub Advisory GHSA-p5w6-75f9-cc2p
- NVD CVE-2026-40265
- OSV GO-2026-5530
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.