CVE-2026-22810
8.2 · HIGHOverview
CVE-2026-22810 is a high-severity vulnerability affecting joplinapp joplin. It was published on May 18, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from joplinapp. Update joplin to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| joplinapp | joplin | >= 0, < 3.5.7 | Affected |
| msiemens | one2html | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2026-22810?
CVE-2026-22810 is a high-severity vulnerability affecting joplinapp joplin. It was published on May 18, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).
How severe is CVE-2026-22810?
This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2026-22810?
Check the references section for vendor advisories and patches from joplinapp. Update joplin to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-22810?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-22810 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
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