CVE-2026-33382: high-severity vulnerability in Grafana OSS
Denial of service via unbounded request body size
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.4%
Several Grafana API endpoints, some of them unauthenticated, do not limit the size of the request body before processing it. An attacker can send very large payloads that force excessive memory allocation, potentially exhausting memory and causing a denial of service.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
Grafana · Grafana OSSRelated CVEs — Grafana OSS
In the same product, most dangerous first.
CVE-2026-15815HIGHCVE-2026-15815 CVE RecordEPSS 0.7%CVE-2026-33375MEDIUMGrafana MSSQL Data Source Plugin: Restriction Bypass Leading to OOM DoSEPSS 0.5%CVE-2026-42129HIGHPath traversal in the Loki data source pluginEPSS 0.4%CVE-2026-42127HIGHPre-authentication denial of service in the public dashboard query endpointEPSS 0.4%CVE-2026-19475MEDIUMSQL Data Source Plugin: OOM DoS via $__timeGroup macroEPSS 0.4%CVE-2026-8609MEDIUMPre-authentication denial of service via the OAuth login routeEPSS 0.4%