---
id: CVE-2026-49453
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 3.6.15 and 3.7.2, Joplin accepts
  synchronized resource metadata whose id or file_extension contains
  parent-directory or pa…
severity: high
cvss: 7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:L'
cwe:
  - CWE-20
  - CWE-22
vendor: laurent22
product: joplin
affected:
  - joplin < 3.6.15
  - 'joplin >= 3.7.0, < 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-2026-49453'
references:
  - url: >-
      https://github.com/laurent22/joplin/commit/18e0b08c282c89ae51612c4eff67af2a45ff5163
    label: security-advisories@github.com
  - url: >-
      https://github.com/laurent22/joplin/commit/50518073740c4501058e366300b42c2f1925cb05
    label: security-advisories@github.com
  - url: 'https://github.com/laurent22/joplin/pull/15540'
    label: security-advisories@github.com
  - url: 'https://github.com/laurent22/joplin/pull/15672'
    label: security-advisories@github.com
  - url: >-
      https://github.com/laurent22/joplin/security/advisories/GHSA-r24r-gp6h-cwgf
    label: security-advisories@github.com
  - url: >-
      https://github.com/laurent22/joplin/security/advisories/GHSA-r24r-gp6h-cwgf
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.0041
epssPercentile: 0.32432
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-22T13:31:17.285182Z'
ingestedAt: '2026-09-21T21:53:57.417Z'
---

## Overview

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.6.15 and 3.7.2, Joplin accepts synchronized resource metadata whose id or file_extension contains parent-directory or path-separator characters. BaseItem.unserialize() stores the unvalidated fields, resourceFilename() concatenates them into a destination path, and ResourceFetcher writes the attacker-controlled resource blob outside the resource directory during background synchronization. An attacker with write access to a configured sync target or shared notebook can create or overwrite files at an attacker-chosen existing path without user interaction. This issue is fixed in versions 3.6.15 and 3.7.2.

## Remediation

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