CVE-2026-19854: CWE-319:Cleartext Transmission of Sensitive Information in Grafana Clickhouse Datasource
When the ClickHouse plugin uses Native protocol (the default) with PDC or secure SOCKS, it asks for TLS but the connection library ignores that and talks to ClickHouse in the clear. Username, password, queries, and results can be read on the hop after the proxy. The server certificate is never checked, and a configured client certificate is not sent.
CVE-2026-19854: CWE-319:Cleartext Transmission of Sensitive Information in Grafana Clickhouse Datasource
Description
When the ClickHouse plugin uses Native protocol (the default) with PDC or secure SOCKS, it asks for TLS but the connection library ignores that and talks to ClickHouse in the clear. Username, password, queries, and results can be read on the hop after the proxy. The server certificate is never checked, and a configured client certificate is not sent.
CVSS v3.1
Score 6.1medium
Affected software
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GRAFANA
- Date Reserved
- 2026-08-14T09:38:53.631Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a906ba6acd9273b498399e3
Added to database: 08/27/2026, 16:53:58 UTC
Last updated: 08/27/2026, 23:27:25 UTC
Views: 7
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