{"id":"GHSA-9237-rg5p-rhfw","summary":"@saltcorn/data: Tenant user role is used for tenant creation role check","details":"## Summary\n\nWhen a tenant admin is logged out of the root domain (e.g., saltcorn.com) but logged in to their own tenant space as admin, they can simply append `/tenant/create` to their tenant URL. The system reads the role from the tenant context (admin), and a new tenant is created on the **root domain** (in `PUBLIC SCHEMA \u003e _sc_tenants`), rather than in the tenant's own `_sc_tenants` table.\n\nIf the same logic applies to other routes, a tenant admin effectively gains admin rights on the root domain.\n\n## PoC\n\nA tenant-created subtenant appears under the Saltcorn public schema instead of the tenant's own schema.\n\n- Even when `role_id=1` is required for tenant creation on saltcorn.com (only admin can create tenants), existing tenant admins can still create new tenants because their local `role_id:1` is evaluated against the root domain.\n- Even when `role_to_create_tenant` is set to `0` in the tenant's `_sc_config` schema, or removed entirely, the tenant admin can still create sub-tenants on the root domain — suggesting `role_to_create_tenant` is not being read at all.\n\n## Impact\n\nTenant admins gain unauthorized admin-level access to the root domain. Any authenticated tenant admin can perform privileged operations (e.g., creating tenants) on the root domain by exploiting the role context mismatch.","modified":"2026-04-22T14:58:32.498203Z","published":"2026-04-22T14:31:34Z","database_specific":{"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-04-22T14:31:34Z","nvd_published_at":null,"cwe_ids":["CWE-863"]},"references":[{"type":"WEB","url":"https://github.com/saltcorn/saltcorn/security/advisories/GHSA-9237-rg5p-rhfw"},{"type":"PACKAGE","url":"https://github.com/saltcorn/saltcorn"}],"affected":[{"package":{"name":"@saltcorn/data","ecosystem":"npm","purl":"pkg:npm/%40saltcorn/data"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.4.4"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-9237-rg5p-rhfw/GHSA-9237-rg5p-rhfw.json"}},{"package":{"name":"@saltcorn/data","ecosystem":"npm","purl":"pkg:npm/%40saltcorn/data"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.5.0-beta.0"},{"fixed":"1.5.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-9237-rg5p-rhfw/GHSA-9237-rg5p-rhfw.json"}},{"package":{"name":"@saltcorn/data","ecosystem":"npm","purl":"pkg:npm/%40saltcorn/data"},"ranges":[{"type":"SEMVER","events":[{"introduced":"1.6.0-alpha.0"},{"fixed":"1.6.0-beta.2"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-9237-rg5p-rhfw/GHSA-9237-rg5p-rhfw.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N"}]}