---
id: CVE-2026-46649
title: >-
  Joplin is an open source note-taking and to-do application that organises
  notes and lists into notebooks
summary: >-
  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-minut…
severity: critical
cvss: 9.1
cvssVector: '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'
cwe:
  - CWE-307
vendor: laurent22
product: joplin
affected:
  - joplin < 3.7.2
published: '2026-09-21'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T18:30:42.573'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-46649'
references:
  - url: >-
      https://github.com/laurent22/joplin/commit/fd8c1fb53f98f689e846dc164e39f307f09b684d
    label: security-advisories@github.com
  - url: 'https://github.com/laurent22/joplin/pull/15433'
    label: security-advisories@github.com
  - url: >-
      https://github.com/laurent22/joplin/security/advisories/GHSA-6vwc-4hrg-qp5h
    label: security-advisories@github.com
  - url: 'https://github.com/laurent22/joplin/tree/v3.7.2'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
epss: 0.00562
epssPercentile: 0.44316
cvssSource: cna
ingestedAt: '2026-09-21T21:53:57.416Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.