CVE-2026-19475Network attack vectorHinoki check available

Authenticated server crash via timeGroup macro injection

Published Sep 2, 2026 · Updated Sep 3, 2026

Denial of service in Grafana OSS allows remote authenticated users to crash the server through a crafted SQL data source query. The SQL macro parser's regular expression fails to reject a $__timeGroup macro injected through a WHERE clause, and evaluation consumes memory without control. Remote authenticated users need permission to query an MSSQL, PostgreSQL, or MySQL data source; the request terminates the process and can be repeated after restart.

CVSS severity6.5
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Denial of service in Grafana OSS allows remote authenticated users to crash the server through a crafted SQL data source query. The SQL macro parser's regular expression fails to reject a $__timeGroup macro injected through a WHERE clause, and evaluation consumes memory without control. Remote authenticated users need permission to query an MSSQL, PostgreSQL, or MySQL data source; the request terminates the process and can be repeated after restart.

The record

CVE
CVE-2026-19475
Published
Sep 2, 2026
Updated
Sep 3, 2026
Vendor
Grafana Labs
Product
PostgreSQL data source
Classifications
CWE-400, T1499
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=13.0.0 <=13.0.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Grafana Labs · PostgreSQL data sourceversion=13.0.0 <=13.0.1
Grafana Labs · Grafana OSSversion=11.6.0 <=11.6.16; version=12.0.0 <=12.0.10; version=12.1.0 <=12.1.10; version=12.2.0 <=12.2.10; version=12.3.0 <=12.3.11; version=12.4.0 <=12.4.9; version=13.0.0 <=13.0.7; version=13.1.0 <=13.1.4
Grafana Labs · Microsoft SQL Server data sourceversion=13.0.0 <=13.0.1
Grafana Labs · MySQL data sourceversion=13.0.0 <=13.0.2

Published CVSS scores

6.5Grafana LabsCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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