Joplin: Path traversal in OneNote importer allows overwriting arbitrary files

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Summary

CVECVE-2026-22810
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-05-18 21:16:39 UTC
Updated2026-05-18 21:16:39 UTC
DescriptionJoplin 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.

Risk And Classification

Primary CVSS: v3.1 8.2 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Problem Types: CWE-24 | CWE-24 CWE-24: Path Traversal: '../filedir'

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.2HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
3.1CNADECLARED8.2HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Laurent22 Joplin affected < 3.5.7 Not specified

References

ReferenceSourceLinkTags
github.com/laurent22/joplin/blob/af5108d70233b1db9410346958c1587cf7c1b16... [email protected] github.com
github.com/laurent22/joplin/security/advisories/GHSA-gcmj-c9gg-9vh6 [email protected] github.com
github.com/laurent22/joplin/pull/13736 [email protected] github.com
github.com/laurent22/joplin/commit/791668455e1aae50501ff57ea4783b3fba9d377c [email protected] github.com
github.com/laurent22/joplin/releases/tag/v3.5.7 [email protected] github.com
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