CVE-2026-30956
Critical · 9.9CVSS
9.9
EPSS
0.5%
Published
Mar 10, 2026
CISA due date
—
The record
OneUptime is a solution for monitoring and managing online services. Prior to 10.0.21, a low‑privileged user can bypass authorization and tenant isolation in OneUptime v10.0.20 and earlier 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 skipped and tenant scoping is disabled. This allows attackers to access project data belonging to other tenants, read sensitive User fields via nested relations, leak plaintext resetPasswordToken, and reset the victim’s password and fully take over the account. This results in cross‑tenant data exposure and full account takeover. This vulnerability is fixed in 10.0.21.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| npm | @oneuptime/common | 0 | 10.0.21 |
Related vulnerabilities
- GHSA-r5v6-2599-9g3m OneUptime has authorization bypass via client‑controlled is-multi-tenant-query header… Same vulnerability
- CVE-2026-30959 OneUptime is a solution for monitoring and managing online services. Also affects @oneuptime/common
- CVE-2026-30957 OneUptime is a solution for monitoring and managing online services. Also affects @oneuptime/common
- CVE-2026-30921 OneUptime is a solution for monitoring and managing online services. Also affects @oneuptime/common
- CVE-2026-30920 OneUptime is a solution for monitoring and managing online services. Also affects @oneuptime/common
- CVE-2026-30887 OneUptime is a solution for monitoring and managing online services. Also affects @oneuptime/common
- GHSA-cw6x-mw64-q6pv OneUptime has WhatsApp Resend Verification Authorization Bypass Also affects @oneuptime/common
- GHSA-jw8q-gjvg-8w4q OneUptime has Synthetic Monitor RCE via exposed Playwright browser object Also affects @oneuptime/common