Duplicate Advisory: Vikunja: Any user can enumerate every team and its members by attaching arbitrary teams to a throwaway project

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-39p5-2wrr-xh29. This link is maintained to preserve external references. Original Description vikunja before 2.6.0 fails to validate team access when attaching teams to projects, allowing authenticated users to...

CVE-2026-91980 vikunja before 2.6.0 Team Enumeration via Project Share

vikunja before 2.6.0 fails to validate team access when attaching teams to projects, allowing authenticated users to enumerate all teams and members. Attackers can attach arbitrary team IDs via the project teams endpoint to retrieve complete team rosters including member names and admin flags for...

CVE-2026-10527 Boards plugin retains Board Admin rights for users demoted to System Guest

Mattermost versions 11.7.x = 11.7.6, 10.11.x = 10.11.21, 11.8.x = 11.8.3 fails to reconcile SchemeAdmin flags with a user's current role which allows a user demoted to System Guest to retain Board Admin privileges and perform admin-only operations via the Boards REST API or UI.. Mattermost Adviso...