GHSA-R5V6-2599-9G3M OneUptime has authorization bypass via client‑controlled is-multi-tenant-query header that leads to cross‑tenant data exposure and account takeover

Summary A low‑privileged user can bypass authorization and tenant isolation in OneUptime v10.0.20 by sending a forged is-multi-tenant-query header together with a controlled projectid header. Because the server trusts this client-supplied header, internal permission checks in BasePermission are...

PT-2026-24189

Name of the Vulnerable Software and Affected Versions OneUptime versions prior to 10.0.21 Description A low-privileged user can bypass authorization and tenant isolation in OneUptime by sending a forged is-multi-tenant-query header along with a controlled projectid header. The server incorrectly...