CVE-2026-22810: CWE-24: Path Traversal: '../filedir' in laurent22 joplin
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.
AI Analysis
Technical Summary
CVE-2026-22810 is a path traversal vulnerability (CWE-24) affecting Joplin, an open source note-taking application. The vulnerability exists in the OneNote importer component, which fails to sanitize embedded file names in .one files. An attacker can exploit this by creating a malicious .one file with file names containing '../' sequences, causing the application to write files outside the intended directory and potentially overwrite arbitrary files on disk. This can lead to complete compromise of confidentiality, integrity, and availability of affected systems. The vulnerability affects Joplin versions prior to 3.5.7 and has been patched in version 3.5.7.
Potential Impact
Successful exploitation allows an attacker with local privileges to overwrite arbitrary files on the victim's disk by leveraging the path traversal in the OneNote importer. This can result in full compromise of confidentiality, integrity, and availability of the system. The CVSS v3.1 base score is 8.2 (high), reflecting the potential for significant impact if exploited.
Mitigation Recommendations
Upgrade Joplin to version 3.5.7 or later, where this path traversal vulnerability has been patched. No other mitigation is required as the fix is available and official.
CVE-2026-22810: CWE-24: Path Traversal: '../filedir' in laurent22 joplin
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-22810 is a path traversal vulnerability (CWE-24) affecting Joplin, an open source note-taking application. The vulnerability exists in the OneNote importer component, which fails to sanitize embedded file names in .one files. An attacker can exploit this by creating a malicious .one file with file names containing '../' sequences, causing the application to write files outside the intended directory and potentially overwrite arbitrary files on disk. This can lead to complete compromise of confidentiality, integrity, and availability of affected systems. The vulnerability affects Joplin versions prior to 3.5.7 and has been patched in version 3.5.7.
Potential Impact
Successful exploitation allows an attacker with local privileges to overwrite arbitrary files on the victim's disk by leveraging the path traversal in the OneNote importer. This can result in full compromise of confidentiality, integrity, and availability of the system. The CVSS v3.1 base score is 8.2 (high), reflecting the potential for significant impact if exploited.
Mitigation Recommendations
Upgrade Joplin to version 3.5.7 or later, where this path traversal vulnerability has been patched. No other mitigation is required as the fix is available and official.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-01-09T22:50:10.288Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a0b7bdbec166c07b0f9e877
Added to database: 5/18/2026, 8:51:39 PM
Last enriched: 5/18/2026, 9:06:49 PM
Last updated: 5/20/2026, 1:34:40 PM
Views: 16
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