CVE-2026-8609 | BDVDB-2026-346713 Detail

GrafanaGrafana OSS

Description#

An unauthenticated attacker can repeatedly call Grafana's OAuth login route with unique values, causing unbounded memory growth that can eventually exhaust memory and crash the Grafana instance (denial of service).

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact none, availability impact low. Attack vector: network.

Weaknesses#

CWE-400 Uncontrolled Resource Consumption

References#

https://grafana.com/security/security-advisories/cve-2026-8609

Exploit#

No public exploit known

History#

Version 12026-07-10Record published in the CVE List.
Version 22026-08-27Most recent update recorded in the CVE List.

Published

Published: 2026-07-10
Last modified: 2026-08-27

Vendor information

Vendor: Grafana
Product: Grafana OSS

All Grafana vulnerabilities

Score

5.3 Medium

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 34.2.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Denial of Service

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 11.6.0 and <= 11.6.14
Fixed
Not stated
Vulnerable
>= 12.2.0 and <= 12.2.8
Fixed
Not stated
Vulnerable
>= 12.3.0 and <= 12.3.6
Fixed
Not stated
Vulnerable
>= 12.4.0 and <= 12.4.3
Fixed
Not stated
Vulnerable
>= 13.0.0 and <= 13.0.1
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

5.3 Medium

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	None
Availability	Low

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).