CVE-2026-44523 json
Note Mark: JWT Secret Weakness allows Full Account Takeover via token forgery
published 2026-05-07 6 mo ago modified 2026-10-26 13 d ago also GHSA-q6mh-rqwh-g786 , GO-2026-5567 , EUVD-2026-30367
- cvss
- 10.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.1%
- EPSS 0.1% chance of exploitation in 30 days, percentile 4%
- public exploits
- 0
- none known
Summary
Note Mark is an open-source note-taking application. Prior to 0.19.4, no minimum length or entropy is enforced on the JWT_SECRET configuration value. The application accepts any base64-decodable secret regardless of size, including secrets as short as 1 byte. This vulnerability is fixed in 0.19.4.
Patch / fix
- go github.com/enchant97/note-mark/backend 0.0.0-20260501152247-18b587758667
- 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
- yes
- Technical impact
- total
- Assessed
- 5 mo ago
Exploit prediction
0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/enchant97/note-mark/security/advisories/GHSA-q6mh-rqwh-g786 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N |
| GitHub | 3.1 | 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/enchant97/note-mark/backend | <0.0.0-20260501152247-18b587758667 |
0.0.0-20260501152247-18b587758667 |
Affected products
- enchant97 note-mark
Classification
References
-
github.com
/enchant97/note-mark/commit/18b58775866776ed400c403dd0ccad68c1fa4802
web
-
github.com
/enchant97/note-mark/security/advisories/GHSA-q6mh-rqwh-g786
exploit, web, advisory
-
nvd.nist.gov
/vuln/detail/CVE-2026-44523
advisory
-
github.com
/enchant97/note-mark
package
-
github.com
/enchant97/note-mark/releases/tag/v0.19.4
web
Sources
- CVE List CVE-2026-44523
- GitHub Advisory GHSA-q6mh-rqwh-g786
- NVD CVE-2026-44523
- OSV GO-2026-5567
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