CVE-2026-22810

Joplin: Path traversal in OneNote importer allows overwriting arbitrary files

Published May 18, 2026 CVSS 3.1 · 8.2 High EPSS < 1% KEV · Not listed
Description
Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Versions prior to 3.5.7 contain a path traversal vulnerability in the importer which allows overwriting arbitrary files on disk. The OneNote converter does not sanitize the names of embedded files before writing them to disk. As a result, it's possible for an attacker to create a malicious .one file that includes file names containing ../../, that are then interpreted as part of the target path when extracting attachments from the .one file. This issue has been patched in version 3.5.7.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-gcmj-c9gg-9vh6 @joplin/onenote-converter: Path traversal in OneNote importer allows overwriting arbitrary files
History
Type Values Removed Values Added
First Time appeared Msiemens
Msiemens one2html
CPEs cpe:2.3:a:msiemens:one2html:*:*:*:*:*:rust:*:*
Vendors & Products Msiemens
Msiemens one2html
Type Values Removed Values Added
First Time appeared Joplinapp
Joplinapp joplin
CPEs cpe:2.3:a:joplinapp:joplin:*:*:*:*:*:*:*:*
Vendors & Products Joplinapp
Joplinapp joplin
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Laurent 22
Laurent 22 joplin
Vendors & Products Laurent 22
Laurent 22 joplin
Type Values Removed Values Added
Description Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Versions prior to 3.5.7 contain a path traversal vulnerability in the importer which allows overwriting arbitrary files on disk. The OneNote converter does not sanitize the names of embedded files before writing them to disk. As a result, it's possible for an attacker to create a malicious .one file that includes file names containing ../../, that are then interpreted as part of the target path when extracting attachments from the .one file. This issue has been patched in version 3.5.7.
Title Joplin: Path traversal in OneNote importer allows overwriting arbitrary files
Weaknesses CWE-24
References
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
May 20, 2026, 3:55 AM
Reserved
Jan 9, 2026, 10:50 PM
Status
Analyzed
Published
May 18, 2026, 9:16 PM
Modified
Jul 24, 2026, 1:10 PM