What’s Vulnerable › Vulnerabilities

CVE-2026-108731: Raven 2.0.0 through 3.0.0 Missing Authorization via join_workspace Invite-Only Bypass

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-11 · updated 2026-10-16
• Weakness: CWE-862

Description

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.

Affected products

• The-Commit-Company raven: from 2.0.0 through 3.0.0

References

• https://github.com/The-Commit-Company/raven
• https://github.com/The-Commit-Company/raven/blob/a732e10f9c8b2ab3446038396e3eea763da617e7/raven/api/workspaces.py#L58-L67
• https://github.com/The-Commit-Company/raven/blob/a732e10f9c8b2ab3446038396e3eea763da617e7/raven/permissions.py#L74-L90
• https://hackmd.io/@haind03/frappe-raven-invite-only-workspace-flag-unenforced-20261010
• https://www.vulncheck.com/advisories/raven-2.0.0-through-3.0.0-missing-authorization-via-join-workspace-invite-only-bypass

Get alerted when CVE-2026-108731 or the next vulnerability affects your stack