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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).

PUBLISHED Reserved 2026-05-14 | Published 2026-07-10 | Updated 2026-07-13 | Assigner GRAFANA




MEDIUM: 5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Problem types

CWE-400

Product status

Default status
unaffected

11.6.0 (semver)
affected

12.2.0 (semver)
affected

12.3.0 (semver)
affected

12.4.0 (semver)
affected

13.0.0 (semver)
affected

Credits

cyberjoker (Researcher) finder

References

grafana.com/security/security-advisories/cve-2026-8609 vendor-advisory

cve.org (CVE-2026-8609)

nvd.nist.gov (CVE-2026-8609)

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