# CVE-2026-22810

## Summary

- **CVE ID:** CVE-2026-22810
- **Severity:** HIGH
- **CVSS Score:** 8.2 (CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H)
- **CWE:** CWE-24
- **Published:** May 18, 2026
- **Last Modified:** May 20, 2026

## 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.

## Affected Products

- laurent22 — joplin (< 3.5.7)

## References

- [CNA](https://github.com/laurent22/joplin/security/advisories/GHSA-gcmj-c9gg-9vh6)
- [CNA](https://github.com/laurent22/joplin/pull/13736)
- [CNA](https://github.com/laurent22/joplin/commit/791668455e1aae50501ff57ea4783b3fba9d377c)
- [CNA](https://github.com/laurent22/joplin/blob/af5108d70233b1db9410346958c1587cf7c1b16d/packages/onenote-converter/renderer/src/page/embedded_file.rs#L13-L16)
- [CNA](https://github.com/laurent22/joplin/releases/tag/v3.5.7)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.21%
- **EPSS Percentile:** 10.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._