What’s Vulnerable › Vulnerabilities
CVE-2026-33382: Denial of service via unbounded request body size
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-10 · updated 2026-10-25
- Weakness: CWE-400
Description
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.
Affected products
- Grafana: from 11.6.0 before 11.6.15; from 12.2.0 before 12.2.9; from 12.3.0 before 12.3.7; from 12.4.0 before 12.4.4; from 13.0.0 before 13.0.2 — fixed in 11.6.15, 12.2.9, 12.3.7, 12.4.4, 13.0.2
How to fix
Upgrade to a fixed version: Grafana 11.6.15, 12.2.9, 12.3.7, 12.4.4. Check the vendor advisory for mitigations.
References
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