Joplin Web Clipper pairing allows cross-origin theft of a permanent API token

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-105783
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-06 00:16:33 UTC
Updated2026-10-06 00:16:33 UTC
DescriptionJoplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.13, when Joplin Desktop is running with the opt-in Web Clipper server enabled, the server in packages/lib/ClipperServer.ts sends Access-Control-Allow-Origin: * and allows an arbitrary website to call POST /auth and GET /auth/check because the pairing endpoints do not reject HTTP or HTTPS origins. The desktop confirmation dialog does not identify the requesting origin, so a victim who approves the generic prompt authorizes the attacking page, which then receives the permanent API token. The token provides ongoing read and write access to notes, folders, tags, resources, and master keys. This issue is fixed in version 3.7.13.

Risk And Classification

Primary CVSS: v3.1 8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

Problem Types: CWE-346 | CWE-352 | CWE-346 CWE-346: Origin Validation Error | CWE-352 CWE-352: Cross-Site Request Forgery (CSRF)

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N
3.1CNADECLARED8HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Laurent22 Joplin affected < 3.7.13 Not specified

References

ReferenceSourceLinkTags
github.com/laurent22/joplin/security/advisories/GHSA-9728-v7ww-mxjv [email protected] github.com
github.com/laurent22/joplin/commit/27ae5c0d404ee47ad24862cce917dda6eb2930b7 [email protected] github.com
github.com/laurent22/joplin/releases/tag/v3.7.13 [email protected] github.com
github.com/laurent22/joplin/pull/16276 [email protected] github.com
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