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Highest advisory severityMedium 1 vendor · 1 advisory

CVE-2026-8609

CVE-2026-8609: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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Vendor advisory comparison

Red Hat

1 advisory
  • Advisory severityMedium5.3

    Medium [CVE-2026-8609] Denial of Service via unbounded memory growth in OAuth login route

    CVE-2026-8609Source published Source updated

    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). A flaw was found in Grafana. This results in a denial of service for legitimate users. Red Hat severity: Moderate — CVSS 5.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L). Weakness: CWE-770. Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Hardened Images; Red Hat Ceph Storage 9; Red Hat Enterprise Linux 9. Red Hat lists Multicluster Global Hub; Red Hat Advanced Cluster Management for Kubernetes 2; Red Hat Ceph Storage 5; Red Hat Ceph Storage 6; Red Hat Ceph Storage 7; Red Hat Ceph Storage 8; Red Hat…

    Affected products in this advisory
    • Red Hat Enterprise Linux 10.0 Extended Update Support
    • Red Hat Hardened Images
    • Red Hat Ceph Storage 9
    • Red Hat Enterprise Linux 9

    1 more entries in the full advisory.

    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • grafana-0:10.2.6-28.el10_2.4
    • grafana-0:10.2.6-26.el10_0
    • grafana13-2-main-13.2.1-0.1.hum1
    • grafana13-1-main-13.1.3-0.5.hum1

    6 more entries in the full advisory.

    Mitigation guidance
    • To mitigate this issue, restrict network access to the Grafana instance to trusted internal networks or localhost. If a reverse proxy or load balancer is deployed in front of Grafana, configure it to implement rate limiting on requests to the OAuth login endpoint to prevent an attacker from exhausting system resources. If OAuth is not required, consider disabling it in the Grafana configuration, though this may impact user authentication workflows.
    Full advisory and evidenceOpen source bulletin

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