Auth bypass in Clickvisual
CVE-2026-111670
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.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- hackmd.io/@hieuPenguinnn/clickvisual-report-module-missing-authz-cross-instance… (third-party-advisory)
- github.com/clickvisual/clickvisual/blob/v1.1.2/api/internal/api/apiv2/report/re… (technical-description)
- github.com/clickvisual/clickvisual/blob/v1.1.2/api/internal/service/report/meta… (technical-description)
- www.vulncheck.com/advisories/clickvisual-through-1.1.2-missing-authorization-in… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111670?
- CVE-2026-111670 is a medium-severity vulnerability in Clickvisual, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-10-16.
- How severe is CVE-2026-111670?
- Medium severity. CVSS v3 base score is 4.3 out of 10.