Vulnerability in Joplinapp Joplin
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.
EPSS: 0.002 (11.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H.
Affected products
- Joplinapp Joplin
- Laurent22 Joplin — versions < 3.5.7
- Msiemens One2html
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC)
- security-advisories@github.com (Product, Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-22810?
- CVE-2026-22810 is a high-severity vulnerability in Joplinapp Joplin, classified under CWE-24. CVSS score: 8.2/10. Published 2026-05-18.
- How severe is CVE-2026-22810?
- High severity. CVSS v3 base score is 8.2 out of 10.