CVE-2026-125364

Description

frab through 0.9.1 contains a privilege escalation vulnerability that allows authenticated crew users to grant themselves orga roles by submitting unchecked nested conference_users_attributes. Attackers can abuse UsersController#update or #create, which skip filter_conference_users, to gain orga on any conference and fully manage its events, schedule, reviewers and crew.

References

• https://github.com/frab/frab
• https://github.com/frab/frab/blob/0.9.1/app/controllers/users_controller.rb#L51
• https://github.com/frab/frab/commit/8d14d491ac73f2e19030e95a86b6575106270eeb
• https://github.com/frab/frab/issues/1053
• https://www.vulncheck.com/advisories/frab-through-0.9.1-privilege-escalation-via-conference-users-attributes-in-userscontroller