CVE-2026-8609

HIGHCVSS 7.5/10EPSS 0.36%

Last modified

CVE-2026-8609 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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).. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

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).

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
0.36%

28.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
GrafanaGrafana>= 11.6.0, < 11.6.15
GrafanaGrafana>= 12.2.0, < 12.2.9
GrafanaGrafana>= 12.3.0, < 12.3.7
GrafanaGrafana>= 12.4.0, < 12.4.4
GrafanaGrafana>= 13.0.0, < 13.0.2

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-8609?
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).
How severe is CVE-2026-8609?
CVE-2026-8609 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.
How do I fix CVE-2026-8609?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST