6.1

CVE-2026-19854: grafana clickhouse datasource

CVSS: 6.1v3.1MediumAwaiting analysis
Published 27-08-2026Last modified 27-08-2026
Open JSON

Vulnerability summary

CVE-2026-19854 is a medium (CVSS 6.1) vulnerability in grafana clickhouse datasource. EPSS estimates a 0.05% chance of exploitation in the next 30 days, higher than 0% of scored vulnerabilities.

Overall risk
24/100
0100
Low · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.05%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 27-08-2026
    PublishedVulnerability first disclosed.
  2. 27-08-2026
    Last modifiedVulnerability information updated.

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 metrics

2 scores · 2 sources · 1 version

EPSS trend

Probability

0.05%

Chance of exploitation in the next 30 days

Percentile

0%

Versus all other CVEs

30-day change

0.00 pp

From 0.05% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.05%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Grafana1 product

1 vendor · 1 product

References

1 links