CVE-2026-55179

Joplin is an open source note-taking and to-do application that organises notes and lists into notebooks. Prior to 3.7.2, Joplin Server's GET /items/:id/content route in packages/server/src/routes/index/items.ts loads item content from an attacker-supplied internal server ID without checking whether the signed-in user owns or can access that item. Any authenticated user who obtains or guesses another user's item ID can read the corresponding note or item content when end-to-end encryption does not protect it. This issue is fixed in version 3.7.2.

• https://github.com/laurent22/joplin/commit/63dfa3b5ab47f29129348b4cd3a161a2dce6bc0e
• https://github.com/laurent22/joplin/pull/15657
• https://github.com/laurent22/joplin/security/advisories/GHSA-r865-g55x-3mfc
• https://github.com/laurent22/joplin/security/advisories/GHSA-r865-g55x-3mfc