CVE-2026-59815

Summary

The flaw allows a low-privileged authenticated user to create items under a share ID before acceptance, potentially injecting content into shared folders without proper authorization.

Exploitability

Exploitation requires a pending folder-share invitation and access to the Joplin Server. It is moderately difficult due to the need for initial authentication and a specific timing condition.

Blast radius

If exploited, this could lead to unauthorized content injection into shared folders, impacting multiple users including owners and accepted participants.

Prioritized remediation

Update to Joplin version 3.7.7 or later to mitigate the vulnerability.

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.