{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-42127: Grafana pre-auth DoS through arbitrarily large input to public dashboard query handler","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-42127","status":"final","version":"1","initial_release_date":"2026-06-22T16:31:28.096Z","current_release_date":"2026-06-22T17:28:35.835Z","revision_history":[{"date":"2026-06-22T16:31:28.096Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"The public dashboard query endpoint does not limit request body size before processing, allowing unauthenticated attackers to trigger excessive memory allocation by sending arbitrarily large JSON payloads. This can lead to denial of service through memory exhaustion. No valid dashboard access token or authentication is required to exploit this vulnerability.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-42127 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-42127"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-42127"},{"category":"external","summary":"grafana.com","url":"https://grafana.com/security/security-advisories/cve-2026-42127"}]},"product_tree":{"branches":[{"category":"vendor","name":"Grafana","branches":[{"category":"product_name","name":"Grafana Enterprise","branches":[{"category":"product_version_range","name":"<=11.6.14","product":{"name":"Grafana Grafana Enterprise <=11.6.14","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:grafana:grafana_enterprise:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":"<=12.2.8","product":{"name":"Grafana Grafana Enterprise <=12.2.8","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:grafana:grafana_enterprise:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":"<=12.3.6","product":{"name":"Grafana Grafana Enterprise <=12.3.6","product_id":"CSAFPID-3","product_identification_helper":{"cpe":"cpe:2.3:a:grafana:grafana_enterprise:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":"<=12.4.3","product":{"name":"Grafana Grafana Enterprise <=12.4.3","product_id":"CSAFPID-4","product_identification_helper":{"cpe":"cpe:2.3:a:grafana:grafana_enterprise:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":"<=13.0.1","product":{"name":"Grafana Grafana Enterprise <=13.0.1","product_id":"CSAFPID-5","product_identification_helper":{"cpe":"cpe:2.3:a:grafana:grafana_enterprise:*:*:*:*:*:*:*:*"}}}]}]},{"category":"vendor","name":"Grafana","branches":[{"category":"product_name","name":"Grafana OSS","branches":[{"category":"product_version_range","name":">=11.6.0 <=11.6.14","product":{"name":"Grafana Grafana OSS >=11.6.0 <=11.6.14","product_id":"CSAFPID-6","product_identification_helper":{"cpe":"cpe:2.3:a:grafana:grafana_oss:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=12.2.0 <=12.2.8","product":{"name":"Grafana Grafana OSS >=12.2.0 <=12.2.8","product_id":"CSAFPID-7","product_identification_helper":{"cpe":"cpe:2.3:a:grafana:grafana_oss:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=12.3.0 <=12.3.6","product":{"name":"Grafana Grafana OSS >=12.3.0 <=12.3.6","product_id":"CSAFPID-8","product_identification_helper":{"cpe":"cpe:2.3:a:grafana:grafana_oss:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=12.4.0 <=12.4.3","product":{"name":"Grafana Grafana OSS >=12.4.0 <=12.4.3","product_id":"CSAFPID-9","product_identification_helper":{"cpe":"cpe:2.3:a:grafana:grafana_oss:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":">=13.0.0 <=13.0.1","product":{"name":"Grafana Grafana OSS >=13.0.0 <=13.0.1","product_id":"CSAFPID-10","product_identification_helper":{"cpe":"cpe:2.3:a:grafana:grafana_oss:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-42127","title":"Grafana pre-auth DoS through arbitrarily large input to public dashboard query handler","notes":[{"category":"description","text":"The public dashboard query endpoint does not limit request body size before processing, allowing unauthenticated attackers to trigger excessive memory allocation by sending arbitrarily large JSON payloads. This can lead to denial of service through memory exhaustion. No valid dashboard access token or authentication is required to exploit this vulnerability.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7","CSAFPID-8","CSAFPID-9","CSAFPID-10"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH"},"products":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7","CSAFPID-8","CSAFPID-9","CSAFPID-10"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1","CSAFPID-2","CSAFPID-3","CSAFPID-4","CSAFPID-5","CSAFPID-6","CSAFPID-7","CSAFPID-8","CSAFPID-9","CSAFPID-10"]}]}]}