---
id: CVE-2026-59814
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 3.7.7, Joplin Server's GET
  /shares/:id?resource_id= route serves a resource with the attacker-controlled
  mime value and om…
severity: high
cvss: 7.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N'
cwe:
  - CWE-79
vendor: laurent22
product: joplin
affected:
  - joplin < 3.7.7
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-2026-59814'
references:
  - url: >-
      https://github.com/laurent22/joplin/commit/920cd8f463bf9bbce9daa07581676123007118e5
    label: security-advisories@github.com
  - url: 'https://github.com/laurent22/joplin/pull/15787'
    label: security-advisories@github.com
  - url: >-
      https://github.com/laurent22/joplin/security/advisories/GHSA-mx98-7h4g-6gmh
    label: security-advisories@github.com
  - url: >-
      https://github.com/laurent22/joplin/security/advisories/GHSA-mx98-7h4g-6gmh
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.0035
epssPercentile: 0.25972
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-22T13:29:30.699889Z'
ingestedAt: '2026-09-21T21:53:57.433Z'
---

## Overview

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.7, Joplin Server's GET /shares/:id?resource_id= route serves a resource with the attacker-controlled mime value and omits Content-Disposition when the resource title is empty. A low-privileged user can publish an empty-title image/svg+xml attachment whose script executes when a victim opens the public share. By default, user content shares the Joplin Server application origin, allowing the script to access same-origin data and, when the victim is authenticated, perform actions with the victim's session, including reading administrative data and anti-CSRF tokens. Installations that configure USER_CONTENT_BASE_URL to a separate origin still execute the script, but on that separate user-content origin rather than the application origin. This issue is fixed in version 3.7.7.

## Remediation

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