---
id: CVE-2026-105783
title: Joplin Web Clipper pairing allows cross-origin theft of a permanent API token
summary: >-
  Joplin is an open source note-taking and to-do application that organises
  notes and lists into notebooks. Prior to 3.7.13, when Joplin Desktop is
  running with the opt-in Web Clipper server enabled, the server in
  packages/lib/ClipperServe…
severity: high
cvss: 8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N'
cvssSource: cna
cwe:
  - CWE-346
  - CWE-352
vendor: laurent22
product: joplin
affected:
  - joplin < 3.7.13
published: '2026-10-05'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T23:10:26.012Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-105783'
references:
  - url: >-
      https://github.com/laurent22/joplin/security/advisories/GHSA-9728-v7ww-mxjv
    label: >-
      https://github.com/laurent22/joplin/security/advisories/GHSA-9728-v7ww-mxjv
  - url: 'https://github.com/laurent22/joplin/pull/16276'
    label: 'https://github.com/laurent22/joplin/pull/16276'
  - url: >-
      https://github.com/laurent22/joplin/commit/27ae5c0d404ee47ad24862cce917dda6eb2930b7
    label: >-
      https://github.com/laurent22/joplin/commit/27ae5c0d404ee47ad24862cce917dda6eb2930b7
  - url: 'https://github.com/laurent22/joplin/releases/tag/v3.7.13'
    label: 'https://github.com/laurent22/joplin/releases/tag/v3.7.13'
tags:
  - cve.org
ingestedAt: '2026-10-05T23:36:21.187Z'
---

## Overview

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.13, when Joplin Desktop is running with the opt-in Web Clipper server enabled, the server in packages/lib/ClipperServer.ts sends Access-Control-Allow-Origin: * and allows an arbitrary website to call POST /auth and GET /auth/check because the pairing endpoints do not reject HTTP or HTTPS origins. The desktop confirmation dialog does not identify the requesting origin, so a victim who approves the generic prompt authorizes the attacking page, which then receives the permanent API token. The token provides ongoing read and write access to notes, folders, tags, resources, and master keys. This issue is fixed in version 3.7.13.

## Affected

- `joplin < 3.7.13`

## Remediation

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