CVE-2026-19854

Published: Aug 27, 2026Modified: Aug 31, 2026

6.1

Vector

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

Exploitability: 1.6 / Impact: 4.0

Source: security@grafana.com (Secondary)

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.

Related CWEs

CWE-319

Cleartext Transmission of Sensitive Information

The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.

References (1)

https://grafana.com/security/security-advisories/cve-2026-19854

Source: security@grafana.com

Timeline

No history available yet.