{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-30956", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-07T17:34:39.981Z", "datePublished": "2026-03-10T16:56:29.018Z", "dateUpdated": "2026-03-10T16:56:29.018Z"}, "containers": {"cna": {"title": "OneUptime has authorization bypass via client\u2011controlled is-multi-tenant-query header", "problemTypes": [{"descriptions": [{"cweId": "CWE-285", "lang": "en", "description": "CWE-285: Improper Authorization", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-862", "lang": "en", "description": "CWE-862: Missing Authorization", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 10, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/OneUptime/oneuptime/security/advisories/GHSA-r5v6-2599-9g3m", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/OneUptime/oneuptime/security/advisories/GHSA-r5v6-2599-9g3m"}, {"name": "https://github.com/OneUptime/oneuptime/releases/tag/10.0.21", "tags": ["x_refsource_MISC"], "url": "https://github.com/OneUptime/oneuptime/releases/tag/10.0.21"}], "affected": [{"vendor": "OneUptime", "product": "oneuptime", "versions": [{"version": "< 10.0.21", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-03-10T16:56:29.018Z"}, "descriptions": [{"lang": "en", "value": "OneUptime is a solution for monitoring and managing online services. Prior to 10.0.21, a low\u2011privileged 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\u2019s password and fully take over the account. This results in cross\u2011tenant data exposure and full account takeover. This vulnerability is fixed in 10.0.21."}], "source": {"advisory": "GHSA-r5v6-2599-9g3m", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "OneUptime is a solution for monitoring and managing online services. Prior to 10.0.21, a low\u2011privileged 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\u2019s password and fully take over the account. This results in cross\u2011tenant data exposure and full account takeover. This vulnerability is fixed in 10.0.21."}], "id": "CVE-2026-30956", "lastModified": "2026-03-10T18:18:54.587", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.9, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 6.0, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-03-10T18:18:54.587", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/OneUptime/oneuptime/releases/tag/10.0.21"}, {"source": "security-advisories@github.com", "url": "https://github.com/OneUptime/oneuptime/security/advisories/GHSA-r5v6-2599-9g3m"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-285"}, {"lang": "en", "value": "CWE-862"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}