{"cve":"CVE-2026-30956","nvd":{"published":"2026-03-10T18:18:54.587","modified":"2026-10-07T08:10:00.200","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":9.9},"cwes":["CWE-285","CWE-862"],"references":["https://github.com/OneUptime/oneuptime/releases/tag/10.0.21","https://github.com/OneUptime/oneuptime/security/advisories/GHSA-r5v6-2599-9g3m"],"products":["hackerbay:oneuptime"],"source":"nvd","synced_at":"2026-10-19T22:25:53.701907451+00:00"},"epss":{"cve":"CVE-2026-30956","score":0.00503,"percentile":0.42758,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-r5v6-2599-9g3m","url":"https://osv.dev/vulnerability/GHSA-r5v6-2599-9g3m","summary":"OneUptime has authorization bypass via client‑controlled is-multi-tenant-query header that leads to cross‑tenant data exposure and account takeover","modified":"2026-03-10T19:03:36.459976Z","packages":[{"ecosystem":"npm","name":"@oneuptime/common","purl":"pkg:npm/%40oneuptime/common","ranges":["<10.0.21"],"fixed":["10.0.21"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}