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.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/22xxx/CVE-2026-22810.json",
"cwe_ids": [
"CWE-24"
],
"cna_assigner": "GitHub_M"
}{
"cpe": "cpe:2.3:a:joplinapp:joplin:*:*:*:*:*:*:*:*",
"source": [
"CPE_RANGE",
"REFERENCES"
],
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "3.5.7"
}
]
}{
"cpe": "cpe:2.3:a:msiemens:one2html:*:*:*:*:*:rust:*:*",
"source": "CPE_RANGE",
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "1.3.0"
}
]
}