CVE-2026-19854 CVE Record

published 2026-08-27 2 mo ago modified 2026-08-31 2 mo ago also EUVD-2026-67089

cvss: 6.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.1%; EPSS 0.1% chance of exploitation in 30 days, percentile 0%
public exploits: 0; none known

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.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-19854 updated 2026-10-19 cvss 6.1

grafana: Grafana ClickHouse Plugin: Information disclosure via cleartext communication

Red Hat Hardened Images hi/grafana, grafana12.4, grafana13.1, grafana13.2
not affected: component not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 2 mo ago (2026-08-27)

Exploit prediction

0.07% chance of exploitation in the next 30 days, higher than 0% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.1	CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N

Affected products

Grafana Clickhouse Datasource

Classification

Weakness

CWE-319 Cleartext Transmission of Sensitive Information

References

grafana.com /security/security-advisories/cve-2026-19854
vendor-advisory

Sources

CVE List CVE-2026-19854
NVD CVE-2026-19854

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary