23 Oct 2026 15:48:27 UTC
Joplin: Path traversal in resource sync — silent arbitrary file write outside the resource directory
cve-program · CVE-2026-49453 · Published
CVE-2026-49453
Joplin: Path traversal in resource sync — silent arbitrary file write outside the resource directory
CVSS 3.1 7.0 HIGHCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-49453
PublishedJoplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.6.15 and 3.7.2, Joplin accepts synchronized resource metadata whose id or file_extension contains parent-directory or path-separator characters. BaseItem.unserialize() stores the unvalidated fields, resourceFilename() concatenates them into a destination path, and ResourceFetcher writes the attacker-controlled resource blob outside the resource directory during background synchronization. An attacker with write access to a configured sync target or shared notebook can create or overwrite files at an attacker-chosen existing path without user interaction. This issue is fixed in versions 3.6.15 and 3.7.2.
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