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CVE-2026-8609

33
FAUCET Score

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).

First published: Jul 10, 2026Last modified: Jul 10, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 11.6.0, < 11.6.15CPE matchmatch criteria
cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*
>= 12.2.0, < 12.2.9CPE matchmatch criteria
cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*
>= 12.3.0, < 12.3.7CPE matchmatch criteria
cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*
>= 12.4.0, < 12.4.4CPE matchmatch criteria
cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*
>= 13.0.0, < 13.0.2CPE matchmatch criteria
cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
LOW
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.40%
Probability of exploitation in next 30 days
EPSS Percentile
32.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0040 is in the 12th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

grafana.com / security/security-advisories/cve-2026-8609
Vendor Advisory