CVE-2026-111670

Description

ClickVisual through 1.1.2 contains a missing authorization vulnerability in the /api/v2/reports handlers that allows authenticated low-privileged users to access ClickHouse instances they were not granted. Attackers can iterate the instance-id parameter in ReportSourceDatabases, ReportSourceTables, ReportTableColumns and WhereCheckRun to enumerate schemas and infer row counts of restricted tables.

References

• https://github.com/clickvisual/clickvisual/blob/v1.1.2/api/internal/api/apiv2/report/report.go#L282-L343
• https://github.com/clickvisual/clickvisual/blob/v1.1.2/api/internal/service/report/metadata.go#L136-L152
• https://hackmd.io/@hieuPenguinnn/clickvisual-report-module-missing-authz-cross-instance-idor
• https://www.vulncheck.com/advisories/clickvisual-through-1.1.2-missing-authorization-in-apiv2-report-module