Vulnerability in laurent22 joplin

[ Why it matters ]Priority signals

• Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.13, packages/server/src/models/ApplicationModel.ts accepts a caller-chosen application authorization identifier, applications/:id/confirm binds that identifier to a logged-in user through a generic consent page, and the public packages/server/src/routes/api/application_auth.ts endpoint passes it to ApplicationModel.createAppPassword without authenticating or binding the redeemer. An attacker can cause a victim to approve the attacker's identifier, redeem a durable application ID and password, and exchange the credential for a victim session with full read and write access to synchronized data. This vulnerability is fixed in 3.7.13.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund5 Oct 2026WID-SEC-2026-3748

  Joplin: Vulnerability allows bypassing security measures Translated from German

  CVE-2026-105786

[ References ]References

• github.com/laurent22/joplin/commit/1a0a50afc96d4c228c736293d53de96aa23f4d00
• github.com/laurent22/joplin/pull/16270
• github.com/laurent22/joplin/releases/tag/v3.7.13
• github.com/laurent22/joplin/security/advisories/GHSA-435m-gr6q-2fg6