CVE-2026-108731 PUBLISHED

Raven 2.0.0 through 3.0.0 contains a missing authorization vulnerability that allows authenticated users to join invite-only Public workspaces by ignoring the can_only_join_via_invite setting. Attackers with the Raven User role can call the join_workspace method to become persistent members, reading and posting in Public and Open channels.

• HaiND from the Post and Telecommunication Institute of Technology finder

• https://hackmd.io/@haind03/frappe-raven-invite-only-workspace-flag-unenforced-20261010
• https://github.com/The-Commit-Company/raven/blob/a732e10f9c8b2ab3446038396e3eea763da617e7/raven/permissions.py#L74-L90
• https://github.com/The-Commit-Company/raven/blob/a732e10f9c8b2ab3446038396e3eea763da617e7/raven/api/workspaces.py#L58-L67
• https://github.com/The-Commit-Company/raven
• VulnCheck Advisory: Raven 2.0.0 through 3.0.0 Missing Authorization via join_workspace Invite-Only Bypass

• Missing Authorization CWE