CVE-2026-59093 PUBLISHED

Weaviate < 1.38.0 - Privilege Escalation via Unchecked Permissions in RBAC Role Assignment

Assigner: VulnCheck
Reserved: 02.07.2026 Published: 02.07.2026 Updated: 02.07.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 8.7

Product Status

Vendor weaviate
Product weaviate
Versions Default: unaffected
  • affected from 0 to 1.38.0 (excl.)

Credits

  • George Chen finder

References

Problem Types

  • Incorrect Privilege Assignment CWE