What is CVE-2026-28381?

CVE-2026-28381 is a critical-severity vulnerability in Grafana Snowflake, classified under Improper Access Control. CVSS score: 9.6/10. Published 2026-06-22.

How severe is CVE-2026-28381?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Vulnerability in Grafana Snowflake

CVE-2026-28381

The Snowflake datasource allows for GET/PUT commands, which can allow any user with access to run queries against the data source to read/write files between the local grafana server and the connected Snowflake host.

Published 2026-06-22 · last modified 2026-06-30.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.004 (26.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

Grafana Snowflake
Grafana Snowflake Datasource — versions 1.14.7

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

grafana.com/security/security-advisories/cve-2026-28381 (vendor-advisory, Broken Link)

Frequently asked questions

What is CVE-2026-28381?: CVE-2026-28381 is a critical-severity vulnerability in Grafana Snowflake, classified under Improper Access Control. CVSS score: 9.6/10. Published 2026-06-22.
How severe is CVE-2026-28381?: Critical severity. CVSS v3 base score is 9.6 out of 10.