CVE-2026-22810 – Joplin: Path traversal in OneNote importer allows overwriting arbitrary files

CVE ID :CVE-2026-22810

Published : May 18, 2026, 8:23 p.m. | 34 minutes ago

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.

Severity: 0.0 | NA

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