---
id: "CVE-2026-116818"
kind: "vulnerability"
aliases: ["CVE-2026-116818"]
title: "OpenPanel: unauthenticated SQL injection leaks other tenants' analytics data"
severity: "high"
cvss: 8.8
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["analytics", "clickhouse", "openpanel", "package", "self-hosted"]
not_affected_if: ["no-internet-exposure", "openpanel-3.0.0-or-later"]
published_at: "2026-10-27T00:17:16+00:00"
first_seen_at: "2026-10-27T00:25:55+00:00"
updated_at: "2026-10-27T00:26:15+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116818", "first_seen_at": "2026-10-27T00:25:55+00:00"}]
---

# OpenPanel: unauthenticated SQL injection leaks other tenants' analytics data

OpenPanel before 3.0.0 lets a remote attacker inject SQL through the projectId parameter of the /live/visitors/:projectId WebSocket, which skips session and project-access checks. An attacker can use UNION or boolean count queries to read other tenants' events and profiles from the ClickHouse database.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed OpenPanel version; `unknown` if the sources do not say how to read it from a deployment.
- Review whether the /live/visitors/:projectId WebSocket is reachable from the internet.

## Fix

- Upgrade OpenPanel to `3.0.0` or later.
- Until upgraded, restrict network access to the OpenPanel WebSocket endpoint.

## Timeline

- 2026-10-27T00:25:55+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-116818

## From the sources

OpenPanel before 3.0.0 contains an unauthenticated ClickHouse sql injection vulnerability that allows remote attackers to inject SQL through the projectId parameter of the /live/visitors/:projectId WebSocket, which lacks session and project-access checks. Attackers can use UNION or boolean count oracles to read other tenants' events and profiles, and project members can similarly inject via the cohort.preview timeframe values.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_