{"id":"CVE-2026-8609","summary":"Pre-authentication denial of service via the OAuth login route","details":"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).","aliases":["BIT-grafana-2026-8609"],"modified":"2026-07-17T03:41:39.714473979Z","published":"2026-07-10T14:58:33.522Z","database_specific":{"unresolved_ranges":[{"extracted_events":[{"introduced":"11.6.0"},{"last_affected":"11.6.14"},{"introduced":"12.2.0"},{"last_affected":"12.2.8"},{"introduced":"12.3.0"},{"last_affected":"12.3.6"},{"introduced":"12.4.0"},{"last_affected":"12.4.3"},{"introduced":"13.0.0"},{"last_affected":"13.0.1"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"GRAFANA","cwe_ids":["CWE-400"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8609.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/8xxx/CVE-2026-8609.json"},{"type":"ADVISORY","url":"https://grafana.com/security/security-advisories/cve-2026-8609"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-8609"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/grafana/grafana","events":[{"introduced":"d2fdff9ee4d75c74bfd3a97c18a0b8e4d029f06e"},{"fixed":"f70d3e480274a5dbd12006338c393f4b05d441ca"},{"introduced":"92f1fba9b4b6700328e99e97328d6639df8ddc3d"},{"fixed":"d27d2eba9c509d16f214d290436a6ad0bd9c6c01"},{"introduced":"20051fb1fc604fc54aae76356da1c14612af41d0"},{"fixed":"dd5dc51681ff0133ddb2e206c2ea318713aeca16"},{"introduced":"d1729c53a7f44e2e58947eb44eb896c2fb1c30b3"},{"fixed":"42cdc39124912a8506a0c613c319c345aa950b29"},{"introduced":"e9de482b5110e6e7310a18274c53a0d7d0eee6af"},{"fixed":"3fcdbc5a6e5c955bd42bd3715dd03cbad2b078c1"}],"database_specific":{"extracted_events":[{"introduced":"11.6.0"},{"fixed":"11.6.15"},{"introduced":"12.2.0"},{"fixed":"12.2.9"},{"introduced":"12.3.0"},{"fixed":"12.3.7"},{"introduced":"12.4.0"},{"fixed":"12.4.4"},{"introduced":"13.0.0"},{"fixed":"13.0.2"}],"source":"CPE_RANGE","cpe":"cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:*"}}],"versions":["v11.6.14+security-01","v11.6.14","v11.6.13","v11.6.12","v11.6.11","v11.6.10","v11.6.9","v11.6.8","v11.6.7","v11.6.6","v11.6.5","v11.6.4","v11.6.2","v11.6.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-8609.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}