| Component | Weaviate |
| Severity | high (CVSS 8.8) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| Published (NVD) | 2026-07-02 |
| Last modified | 2026-07-14 |
| Affected versions | weaviate < 1.38.0 |
| Fixed in | 1.38.0 |
| Weakness | CWE-266 |
| CISA KEV | not listed |
NVD description
Weaviate before 1.38.0 does not verify that a principal performing an RBAC role assignment holds the permissions granted by the assigned role. The assignRoleToUser and assignRoleToGroup handlers (POST /authz/users/{id}/assign and /authz/groups/{id}/assign) authorize only that the caller may assign roles to the target user or group, not the permissions contained in the assigned roles, unlike role creation which enforces that a user can only create roles with permissions less than or equal to its own. A user holding only the delegated assign_and_revoke_users or assign_and_revoke_groups permission can assign the built-in admin role, or any high-privilege custom role, to itself or others, escalating to full administrative control of the database.
What to do
- Upgrade Weaviate to
1.38.0or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-59093
- https://github.com/weaviate/weaviate/commit/2c75f6fb217631f7751c4b2a7d37a488cef13edb
- https://github.com/weaviate/weaviate/pull/11493
- https://www.vulncheck.com/advisories/weaviate-privilege-escalation-via-unchecked-permissions-in-rbac-role-assignment
- https://github.com/weaviate/weaviate/releases/tag/v1.38.0
Read more
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