Joplin 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.
{
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-20",
"CWE-22"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49453.json"
}{
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "3.6.15"
},
{
"introduced": "3.7.0"
},
{
"fixed": "3.7.2"
}
],
"source": [
"AFFECTED_FIELD",
"REFERENCES"
]
}