CVE-2026-44523 Note Mark: JWT Secret Weakness allows Full Account Takeover via token forgery
Attackers can forge JWT tokens to take over accounts if the application is configured with a weak or short JWT secret.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-44523?
CVE-2026-44523 is a critical vulnerability in enchant97 note-mark, published on 14 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-44523?
3 open source packages ship an affected version, including github.com/enchant97/note-mark/backend.
| Package | Affected | Fixed in |
|---|---|---|
github.com/enchant97/note-mark/backend Go | All versions | 0.0.0-20260501152247-18b587758667 |
github.com/enchant97/note-mark/backend Go | All versions | 0.0.0-20260501152247-18b587758667 |
github.com/enchant97/note-mark/backend Go | All versions | 0.0.0-20260501152247-18b587758667 |
How do I fix CVE-2026-44523?
Upgrade github.com/enchant97/note-mark/backend to 0.0.0-20260501152247-18b587758667 or later.
Is CVE-2026-44523 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44523 exists.
Sources
Also known as GHSA-q6mh-rqwh-g786, GO-2026-5567.