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CVE-2026-22810

Joplinapp Joplin path traversal

8.2 HIGHEPSS 0.21%
  1. Published18 May 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.

CVSS 3.1 breakdown

Attack vectorLocal
Attack complexityLow
Privileges requiredLow
User interactionRequired
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Affected products

Joplinapp Joplin< 3.5.7
Msiemens One2html≤ 1.3.0

Remediation

Fixed in
Joplinapp Joplin≥ 3.5.7

References

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Frequently asked

Is CVE-2026-22810 being actively exploited?

CVE-2026-22810 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.21%.

How severe is CVE-2026-22810?

CVE-2026-22810 has a CVSS 3.1 base score of 8.2, rated high. EPSS estimates a 0.21% probability of exploitation.

Which products are affected by CVE-2026-22810?

Affected products include Joplinapp Joplin, Msiemens One2html.

How do I fix CVE-2026-22810?

Upgrade affected software to a fixed version, for example Joplinapp Joplin 3.5.7 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-22810 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.