CVE-2026-46649

critical · 9.1

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.2, Joplin Server's GET /api/login_with_code/:id endpoint accepts a nine-digit SSO authentication code with a ten-minute lifetime without applying limiterLoginBruteForce. An unauthenticated attacker who targets a user during an active SSO login can make unlimited guesses, and a correct code returns a full session token that permits access to and modification of the user's notes, notebooks, and account settings. This issue is fixed in version 3.7.2.

9.1

CVSS

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EPSS (exploit prob.)

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EPSS percentile

2026-09-21

Published

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Weaknesses

CWE-307

References

https://github.com/laurent22/joplin/commit/fd8c1fb53f98f689e846dc164e39f307f09b684d
https://github.com/laurent22/joplin/pull/15433
https://github.com/laurent22/joplin/security/advisories/GHSA-6vwc-4hrg-qp5h
https://github.com/laurent22/joplin/tree/v3.7.2

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-46649