CVE-2026-8609

highpriority · track · 30EPSS 0.004 · 34 %ileDEEURUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.40% (34th) EPSS

CVSS 7.5 · high

Is it mine?

32 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

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).

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.3–7.5

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · ENISA EU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · security@grafana.comexploitability 3.9 · impact 1.4

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: partialcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USCWE-400US

affected products (32)

Products and version ranges known to be affected.

Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
RESF Rocky Linuxall versionscert_bundDEcpe:/o:resf:rocky_linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
SUSE openSUSEall versionscert_bundDEcpe:/o:suse:opensuse:-
Grafana Grafana< 11.6.15cert_bundDE
Grafana Grafana< 12.2.9cert_bundDE
Grafana Grafana< 12.3.7cert_bundDE
Grafana Grafana< 12.4.4cert_bundDE
Grafana Grafana< 13.0.2cert_bundDE
Grafana Grafana OSS≤ 12.2.0 ≤12.2.8enisa_euvdEU
Grafana Grafana OSS≤ 12.4.0 ≤12.4.3enisa_euvdEU
Grafana Grafana OSS≤ 13.0.0 ≤13.0.1enisa_euvdEU
Grafana Grafana OSS≤ 11.6.0 ≤11.6.14enisa_euvdEU
Grafana Grafana OSS≤ 12.3.0 ≤12.3.6enisa_euvdEU
Grafana Labs Grafana≤ 12.3.7fstec_bduRU
Grafana Labs Grafana≤ 11.6.15fstec_bduRU
Grafana Labs Grafana≤ 13.0.2fstec_bduRU
Grafana Labs Grafana≤ 12.4.4fstec_bduRU
Grafana Labs Grafana≤ 12.2.9fstec_bduRU

showing 20 of 32

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-2289Grafana: Mehrere SchwachstellenDeutsch2026-07-12csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Grafana ausnutzen, um einen Denial of Service Angriff durchzuführen oder Cross-Site-Scripting-Angriffe durchzuführen.
BIT-grafana-2026-8609Pre-authentication denial of service via the OAuth login route2026-07-14vendor · osvUS
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).

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund osv NVD CVE.org MITRE

published 2026-07-10modified 2026-10-25

references (4)

External citations — patches, advisories, analysis.

scry

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