CVE-2026-22810
Versions prior to 3.5.7 contain a path traversal vulnerability in the importer which allows overwriting arbitrary files on disk.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.3 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 0.21% probability · 11th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-24
- Affected
- joplinapp/joplin · msiemens/one2html
- Source
- security-advisories@github.com
References
- https://github.com/laurent22/joplin/blob/af5108d70233b1db9410346958c1587cf7c1b16d/packages/onenote-converter/renderer/src/page/embedded_file.rs#L13-L16Product
- https://github.com/laurent22/joplin/commit/791668455e1aae50501ff57ea4783b3fba9d377cPatch
- https://github.com/laurent22/joplin/pull/13736Issue Tracking
- https://github.com/laurent22/joplin/releases/tag/v3.5.7Patch, Product
- https://github.com/laurent22/joplin/security/advisories/GHSA-gcmj-c9gg-9vh6Vendor Advisory
- https://github.com/laurent22/joplin/security/advisories/GHSA-gcmj-c9gg-9vh6Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.