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CVE-2026-22810

Joplin: Path traversal in OneNote importer allows overwriting arbitrary files

HIGH
7.3
CVSS Score
Published: May 18, 2026 at 08:23 PM UTC
Updated: July 24, 2026 at 01:23 PM UTC
3 products affected across 3 vendorsJoplinONE2HTMLJoplin

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Severity
HIGH7.3
Exploit prediction
EPSS 0.2%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Joplin· Joplinappnpm
95%
v < 3.5.7
Affected range stops below 3.5.7, so it looks safe — our inference, not a vendor statement
ONE2HTML· Msiemenscargo
95%
v ≤ 1.3.0
Joplin· LAURENT22
60%
v < 3.5.7
Affected range stops below 3.5.7, so it looks safe — our inference, not a vendor statement

References (5)

x_refsource_CONFIRMVendor Advisory
Source: cverecord
https://github.com/laurent22/joplin/security/advisories/GHSA-gcmj-c9gg-9vh6
x_refsource_MISCIssue Tracking
Source: cverecord
https://github.com/laurent22/joplin/pull/13736
x_refsource_MISCPatch
Source: cverecord
https://github.com/laurent22/joplin/commit/791668455e1aae50501ff57ea4783b3fba9d377c
x_refsource_MISCProduct
Source: cverecord
https://github.com/laurent22/joplin/blob/af5108d70233b1db9410346958c1587cf7c1b16d/packages/onenote-converter/renderer/src/page/embedded_file.rs#L13-L16
x_refsource_MISCPatchProduct
Source: cverecord
https://github.com/laurent22/joplin/releases/tag/v3.5.7

SSVC — Action Prioritization

SSVCPoCNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.3HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-24

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