CVE-2026-22810
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.
Weakness
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.
Affected products
- joplinapp joplin
- msiemens one2html
References
- https://github.com/laurent22/joplin/blob/af5108d70233b1db9410346958c1587cf7c1b16d/packages/onenote-converter/renderer/src/page/embedded_file.rs#L13-L16
- https://github.com/laurent22/joplin/commit/791668455e1aae50501ff57ea4783b3fba9d377c
- https://github.com/laurent22/joplin/pull/13736
- https://github.com/laurent22/joplin/releases/tag/v3.5.7
- https://github.com/laurent22/joplin/security/advisories/GHSA-gcmj-c9gg-9vh6
- https://github.com/laurent22/joplin/security/advisories/GHSA-gcmj-c9gg-9vh6
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