Bug 2525068 (CVE-2026-19854) - CVE-2026-19854 grafana: Grafana ClickHouse Plugin: Information disclosure via cleartext communication
Summary: CVE-2026-19854 grafana: Grafana ClickHouse Plugin: Information disclosure via...
Keywords:
Status: NEW
Alias: CVE-2026-19854
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-27 16:57 UTC by OSIDB Bzimport
Modified: 2026-10-19 13:03 UTC (History)
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Description OSIDB Bzimport 2026-08-27 16:57:02 UTC 
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.
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