Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.7, the GET /api/transcribe/:id and POST /api/transcribe/:id handlers in packages/server/src/routes/api/transcribe.ts on Joplin Server instances with TRANSCRIBE_ENABLED=true pass the decoded id directly into transcription backend URLs. An authenticated user can place URL-encoded slash and parent-directory segments in the job ID, causing parseSubPath() to decode a path that escapes the intended /transcribe/ prefix. The server then proxies the request to other transcription-backend endpoints and can return their responses, potentially exposing internal administrative, health, or configuration data. This issue is fixed in version 3.7.7.

Ein Angreifer kann mehrere Schwachstellen in Joplin ausnutzen, um Benutzerkonten zu übernehmen, erweiterte Berechtigungen zu erlangen, Sicherheitsmaßnahmen zu umgehen, beliebigen Code auszuführen, Daten offenzulegen oder zu manipulieren oder Cross-Site-Scripting-Angriffe durchzuführen.