VULNERABILITY INTELLIGENCE
CVE-2026-19854
CVSS score6.1 MEDIUM
EPSS probability0.07%
CISA KEVNot currently listed
Published2026-08-27
Last modified2026-08-31
CVSS vectorCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N
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.
Weakness classification
- security@grafana.com: CWE-319