CVE-2026-44523: Note Mark: JWT Secret Weakness allows Full Account Takeover via token forgery

Severity: critical (CVSS 10.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-14 · updated 2026-10-26
Weakness: CWE-326

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.

Affected products

enchant97 note-mark: before 0.19.4

References

https://github.com/enchant97/note-mark/security/advisories/GHSA-q6mh-rqwh-g786
https://github.com/enchant97/note-mark/security/advisories/GHSA-q6mh-rqwh-g786

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